CBSE VI Science Separation of Substances
Can we seperate sugar and sand whereas both will not be solid ?
Asked by Jeevanshu
21st October 2017
12:29 PM
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CBSE VIII Science Chemical Effects of Electric Current
Why do impurities dissolved in water increse its productivity?
Asked by deepikankur
19th December 2017
7:20 PM
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CBSE XI Science Maths Permutations and Combinations
Help me to approach this questin's answer...
Asked by nitishkrnehu09
1st January 2018
4:06 AM
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CBSE IX Chemistry Is Matter Around Us Pure?
if there is 2kg of salt and 1 teaspoon of water, which one is the solvent? tell all possible situations where water is the solvent. and define solvent.
Asked by ishita605
2nd January 2018
8:37 PM
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CBSE X Maths Pair of Linear Equations in 2 Variables
Answer the given question
Asked by tultuldutta58
8th January 2018
2:35 AM
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CBSE XI Science Chemistry Equilibrium
How to reudce volume of a sample solution to half
Asked by haroonrashidgkp
2nd March 2018
11:27 AM
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ICSE IX Chemistry Elements, Compounds and Mixtures
explain the following with one example 1)suspension 2)emulsion 3)alloy
Asked by nathsantanukumar
2nd April 2018
7:26 PM
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CBSE X Maths
3x-5y=19 -3x+3y=-1 ------------------ Find y?
Asked by miniprasad
20th April 2018
9:14 PM
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CBSE XII Science Chemistry Solutions
How many grams of concentrated NITRIC ACID solution should be used to prepare 250ml of 2M NITRIC ACID ? The concentrated acid is 70% NITRIC ACID {HNO3}
Asked by pardeepkumar2281
13th May 2018
8:01 AM
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CBSE XII Science Chemistry Solutions
Calculate the concentration of NaOH solution in g/ml which has the same normality of a solution of HCl of concentration 0.04g/ml
Asked by pardeepkumar2281
13th May 2018
8:04 AM
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CBSE XII Science Chemistry Solutions
3.6M sulphuric acid solution is 29% sulphuric acid {H2SO4} . calculate the DENSITY of the solution
Asked by pardeepkumar2281
13th May 2018
8:12 AM
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CBSE X Maths
Solve for x and y, (a-b)x + (a+b)y = a²-2ab-b², (a+b)(x+y)=a²+b²
Asked by CHIDAMBAR
23rd May 2018
7:11 PM
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CBSE XI Commerce Maths
sir, i am not able to understand principal solution of trigonometric function. so please sir tell me some easy way to understand that topic. or please made some easy video to understand that topic.
Asked by deepakagarwal1024
7th June 2018
8:28 PM
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CBSE X Maths
The sides of a triangle are given by the equation y-2=0,y=3x-7,and 2y+x=0
Asked by gautamgupta224
17th June 2018
10:13 AM
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CBSE VIII Maths
(3y-1)/4+(2y+3)/3=(1-7y)/6 solve & verify
Asked by cvshagi
29th June 2018
8:53 PM
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ICSE VIII Chemistry Water
what is the meaning of solute and solvent
Asked by sharmayashu888
29th June 2018
10:59 PM
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CBSE XI Science Chemistry Some Basic Concepts of Chemistry
how many mililitre of 0.5M H2SO4 are needed to dissolve 0.5 gram of CuCO3.
Asked by dineshchem108
9th July 2018
10:44 PM
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CBSE IX Chemistry Is Matter Around Us Pure?
what is solution and give its examples what is suspension and give its examples what is colloidal solution and give its examples how can you separate component from ink
Asked by mohitjoshisnj
30th July 2018
11:42 AM
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CBSE IX Chemistry Is Matter Around Us Pure?
define a solution?
Asked by siddalingaswamikm
11th August 2018
12:36 PM
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ICSE IX Maths
1/5x+y/9=5 1/3x+y/2=14 Solve for x and y
Asked by drmeghasoni78
17th August 2018
11:29 AM
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CBSE XII Science Chemistry Solutions
A solution is prepared by mixing 100 ml of 0.1 M NH4OH and 200 ml of 0.2 M NH4CL . pKb of NH4OH is 4.8 . Then the pH of the solution is
Asked by Deepak
19th August 2018
12:58 PM
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ICSE VIII Chemistry Water
define supersaturated solution
Asked by nathsantanukumar
23rd August 2018
5:58 PM
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JEE Plances JEE (Main) Maths
If, for a positive integer n, the quadratic equation, x(x+1)+(x+1)(x+2)+.... +( n 1) x + − (x+n)=10n has two consecutive integral solutions, then n is equal to :
Asked by kmondaldgms
23rd August 2018
11:03 PM
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CBSE VIII Maths
After 12 years, kanwar shall be 3 times as old as he was 4 years ago. Find his present age.
Asked by saini28priyanka60
7th September 2018
8:03 PM
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ICSE IX Maths
xy(3xsquare-2ysquare)-yz(zysquare-3xsquare)+zx(15xsquare-10ysquare) solution?
Asked by susan.thomassj
23rd September 2018
5:48 AM
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ICSE IX Maths
(x+1)(x+2)(x+3)(x+4)-3 please factorise this
Asked by shahidbaba874
26th September 2018
9:44 PM
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ICSE VIII Maths
If the same numbers be added to the numbers 2,4,14 and 22 then the resultant numbers are in proportional. Find the number
Asked by Amansingh4358
28th September 2018
10:22 PM
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ICSE IX Maths
x/7+y/3=5,x/2-y/9=6
Asked by Maninderpalmonty.hpyc
7th October 2018
8:42 PM
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ICSE VIII Maths
2x+1/3+4x+1/2-3x+5/5=19/10
Asked by meenakalota01
15th October 2018
10:50 PM
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ICSE IX Chemistry Water
what is solution?
Asked by sugandhpatna
24th October 2018
12:33 PM
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ICSE VI Maths
solve the follwing by trial and error method y+9=12
Asked by nafisa
24th October 2018
8:42 PM
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ICSE IX Maths
3x-y=23 x/3+y/4=4
Asked by bhabanicricketer10
28th October 2018
6:44 PM
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CBSE IX Maths
ax+by=a-b,bx-ay=a+b find the value of x and y
Asked by subodhk4197
1st November 2018
3:56 PM
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JEE Main Maths
Sir, pls solve the following.
Asked by rsudipto
23rd December 2018
9:08 AM
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ICSE X Maths
The hotel bill for a no.of people for overnight stay is Rs: 4800 if there were 4 more , the bill each person had to pay would hv reduced by rs 200 . Find the no.of people staying overnight
Asked by chaitanyachaitanyanani
4th February 2019
4:27 PM
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CBSE X Maths
Ram bought ‘a’ flowers for ‘b’ rupees, where ‘a’ and ‘b’ are integers. If he had bought 10 more flowers he would have got all for Rs. 2 and saved 80 paisa a dozen. What are the respective vales of ‘a’ and ‘b’?
Asked by rushabhjain.av
9th February 2019
9:25 PM
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JEE Main Chemistry Redox Reactions and Electrochemistry
What is the potential of half cell consisting of electrode in solution at 250C(E0oxi=0.763V) A. 0.8221V B. 8.221V C. 0.5282V D. 9.282V
Asked by s.ojaswini17
15th February 2019
9:09 PM
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CBSE IX Biology The Fundamental Unit of Life
what is hypotonic solution
Asked by surajsingha711
4th April 2019
9:57 AM
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CBSE XII Science Chemistry Solutions
a solution containing 6 g of benzoic acid in 50 g of ether (C2H,OC,Hs) has a vapour pressure of 410 mm o mercury at 293 K. Given that the vapour pressure of ether at the same temperature is 442 of calculate the molecular mass of benzoic acid. (Assume that the solution is dilute)
Asked by Jatinaa786
4th April 2019
5:18 PM
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CBSE XII Science Chemistry Solutions
18g glucose is added to 178.2g water the vapour pressure of water for this aqueous solution at 100calsias is
Asked by araj02582
8th April 2019
12:56 PM
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CBSE XII Science Chemistry Solutions
In Pradeep publication the definition of solution is " it is a homogenous mixture of two or more chemically non reactive substances" IS THIS DEFINITION CORRECT?
Asked by govtsecschoolnayaganv051
14th April 2019
6:13 PM
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NEET NEET Chemistry Solutions
Pls solving the follin
Asked by ntg432000
28th April 2019
4:25 PM
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CBSE XII Science Chemistry Solutions
when0.5g Nacl present in 1000g of water then calculate the freezing point of solution ? kf= 1.7k kg /mol
Asked by lakashitaparihar801
30th April 2019
4:31 PM
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CBSE XII Science Chemistry Solutions
what are isotonic solution?
Asked by sagarshashank26
2nd May 2019
12:32 PM
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CBSE XI Science Chemistry Some Basic Concepts of Chemistry
More than one options correct.Pls solve.
Asked by pb_ckt
10th May 2019
1:27 PM
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CBSE X Chemistry Acids, Bases and Salts
A solution of substance 'x' is used for white washing. Name the substance 'x' and write it's formula? Write the equation of substance 'x' named in above with water?
Asked by hk304446
14th May 2019
1:08 PM
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CBSE XI Science Chemistry Some Basic Concepts of Chemistry
When 100 ml of M/10 H2SO4 is mixed with 500ml of M/10 NaOH,then what is the nature of the resulting solution and the normality of the excess reactant left?
Asked by pb_ckt
19th May 2019
11:57 PM
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CBSE XII Science Chemistry Solutions
Please explain that what does it mean in the paragraph in the pic given and also explain that what it means that " the solution boils at a constant temperature and composition remains same"
Asked by govtsecschoolnayaganv051
20th May 2019
1:57 PM
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CBSE VIII Maths Linear Equations in One Variable
Asked by kulsum626
21st May 2019
1:18 PM
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CBSE XII Science Chemistry Solutions
In this ques experts also used the same formula which I did but answer which we got by this formula is wrong if we apply the exact formula of raoult law for non volatile solution in which we ignore moles of solute in denominator we get the right answer 122 g /mole I want to ask that why didn't we get right ans by the formula used in this pic as we know that that formula applies on both dilute and concentrated solution
Asked by govtsecschoolnayaganv051
23rd May 2019
2:51 PM
Rejected
CBSE XI Science Chemistry Some Basic Concepts of Chemistry
Calculate the number of Cl- ion in 100 ml of the solution which is formed by mixing of 200 ml of 2M NaCl(aq) , 800 ml 1M MgCl2 (aq) solution and 1 litre 5.3× 10^ -4 M CCl4 (aq) solution ?
Asked by arunavamitra50
29th May 2019
12:42 PM
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CBSE XII Science Chemistry Solutions
Please explain the paragraph given in pic How 100 is written in numerator
Asked by govtsecschoolnayaganv051
10th June 2019
8:44 PM
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CBSE XII Science Chemistry Solutions
Calculate the boiling point of a solution containing 0.45g of camphor (mol. wt. 152) dissolved in 35.4g of acetone (b.p. 56.3°C); Kb per 100 gm of acetone is 17.2°C. IN THIS QUESTION WE USE THE FORMULA = 100 Kb *w2/w1M2 I want to know how we derive this formula in which 100 is in numerator and not 1000 . I know Kb is per 100 g though I am not able to derive this relation
Asked by govtsecschoolnayaganv051
11th June 2019
1:38 PM
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NEET NEET Chemistry Some Basic Concepts in Chemistry
the volume of 0.5 molars NaOH solution required for complete neutralization of 3.65 gram HCl is
Asked by kushagra28feb
13th June 2019
10:09 PM
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CBSE XII Science Chemistry Solutions
I know that answer is (a) but please explain the reason in detail
Asked by govtsecschoolnayaganv051
16th June 2019
10:55 PM
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ICSE VIII Maths Linear Equations
A Father's age is 3 times the sum of ages of his two sons.five years later he will be twice the sum of ages of his two sons. find the present age of father.
Asked by sangeetayadav030383
19th June 2019
1:26 PM
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ICSE VIII Maths Linear Equations
The sum of two digits of a 2-digit number is 14.if the number formed by reversing the digit is less than the original number by 18.find the original number.
Asked by sadhanayadav3021
25th June 2019
6:41 PM
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CBSE XI Science Chemistry Some Basic Concepts of Chemistry
0.4 M, 100 ml solution of NaCl is diluted 1000 ml the molarity of the resultant solution is
Asked by arushidabhade
29th June 2019
5:39 PM
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ICSE IX Chemistry Water
A solution where solvent is a liquid other than water?
Asked by screen1974
10th July 2019
8:21 PM
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CBSE XII Science Chemistry Solutions
Depression in freezing point is 6 K for NaCl solution if kf for water is 1.86 K/kg mol, amount of NaCl dissolved in 1 kg water is (a)3.42 (b)1.62 (c)3.24 (d)1.71
Asked by Balbir
17th July 2019
4:43 PM
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NEET NEET Chemistry Solutions
By dissolving 5g substance in 50g of water, the decrease in freezing point is 1.2 degree celcius. The gram molal depression is 1.85 degree celcius. The molecular weight of substance is (a)105.4 (b)118.2 (c)137.2 (d)154.2
Asked by Balbir
28th July 2019
6:08 PM
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Junior V Maths
If 3/4 of some things is equally 45 what is the total amount
Asked by bijanbiswasrana
16th August 2019
4:50 PM
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CBSE IX Chemistry Is Matter Around Us Pure?
What mass of potassium nitrate would be needed to produce a saturated solution of potassium nitrate in 50 grams of water at 313k
Asked by Krishnaladdha07
19th August 2019
8:00 PM
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CBSE XI Science Chemistry Solutions
Please solve
Asked by brijk456
2nd September 2019
11:58 PM
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CBSE XII Science Chemistry Solutions
I need all the formulas of solutions lesson.
Asked by nireshbillygraham
8th September 2019
11:39 AM
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CBSE VIII Maths Linear Equations in One Variable
The distance between two stations is 340Km. Two trains start simultaneously from these stations on parallel tracks to cross each other. The speed of one of them is greater than the other by 5km/hr. If the distance between the two trains after two hours of their starting 30km, find the speed of each train with explaination and solution. The sum of a digit of a 2-digit number is 8. The number obtained by inter changing the digits exeeds the given number by 18. find the given numbers with explaination and solution.
Asked by anchaltamrakar090
8th September 2019
1:55 PM
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CBSE IX Chemistry Is Matter Around Us Pure?
What is soluble ?
Asked by amitgade248
26th September 2019
7:21 PM
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CBSE VIII Maths Linear Equations in One Variable
Mr. Ranjan is seven times old as his son, 10 years hence, he will be three times as old as his son. Find there ages.
Asked by jayshreehase1985
10th October 2019
4:52 PM
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CBSE IX Biology The Fundamental Unit of Life
What is plasmolysis What is cytoplasm What do you mean by hypotonic solution
Asked by ag8201837
11th October 2019
4:10 PM
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ICSE X Maths Equation of A Line
Police officers of a batch are preparing for drill and are made to stand in rows. If 4 officers are extra in each row,then there would be 2 rows less. But there would be 4 more rows if 4 officers are less in each row. Find the number of officers in the batch. a) 96 b)56 c)69 d)65
Asked by miaowmira1900
14th October 2019
2:35 PM
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CBSE XII Science Chemistry Solutions
Sir, please help me understand how we got the final answer.
Asked by sumayiah2000
5th November 2019
12:47 PM
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ICSE VIII Maths Linear Equations
A multiplex sells tickets under two classes, classic at ₹120 and delux at₹225.if 60 tickets in all were sold for a show that earned₹9825,how many tickets of each class were sold?
Asked by ayurajela
7th December 2019
8:49 AM
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ICSE VIII Maths Linear Equations
In the triangle, sum of two angles is 90° which is the measure of the third angle. Also, the difference of these 2 angles is 10°, find the measure of these two unknown angles.
Asked by Cl_narayan
30th January 2020
10:36 AM
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CBSE VIII Maths Linear Equations in One Variable
why 10x + 6-x = 9x + 6
Asked by brijeshsharma72609
27th February 2020
12:55 AM
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NEET NEET Chemistry Solutions
G (Gibb's free energy) for every solution is said to be less than 0. but isn't it false to say that as in the non ideal solution with positive deviation the gibbs free energy should increase?
Asked by vasu
17th March 2020
7:07 AM
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CBSE XII Science Chemistry Solutions
IS A SATURATED SOLUTION HOMOGENOUS OR HETEROGENOUS ? IS AN UNSATURATED SOLUTION HOMOGENOUS OR HETEROGENOUS ? IS A SUPER - SATURATED SOLUTION HOMOGENOUS OR HETEROGENOUS ? PLEASE EXPLAIN IN DETAIL.
Asked by kandappan
31st March 2020
10:27 AM
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CBSE IX Chemistry Is Matter Around Us Pure?
what is solution?
Asked by kaamal.singh12
4th April 2020
2:24 PM
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CBSE XII Science Chemistry Solutions
What is aqueous solution? Give example.
Asked by sarswati.comchakia
15th April 2020
5:44 PM
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CBSE IX Chemistry Is Matter Around Us Pure?
how are solution and suspension different from each other
Asked by geetarohilla
24th April 2020
7:04 PM
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ICSE X Science
which ion will migrate to cathode in copper sulphate solution
Asked by rashutosh999
11th July 2020
10:40 AM
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CBSE XII Science Chemistry Solutions
what is roults law
Asked by gangajyothibansode
12th August 2020
6:08 AM
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CBSE X Maths Pair of Linear Equations in 2 Variables
A number consists of two digits whose sum is 7. If 45is added to the number, the digits are reversed.Find the number
Asked by daskousik2004
21st August 2020
10:35 PM
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CBSE IX Chemistry Is Matter Around Us Pure?
what is solution
Asked by balajeetelesystemjhajha
5th September 2020
1:22 PM
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CBSE IX Chemistry Atoms and Molecules
what is a solution??
Asked by kinshukgoel
12th September 2020
1:26 PM
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NEET NEET Chemistry Solutions
Please explain this
Asked by akashmanu09
8th January 2021
10:21 AM
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NEET NEET Chemistry Solutions
What is the solution sir ?
Asked by bhagirathdangi12345
12th February 2021
1:42 PM
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CBSE VII Maths Simple Equations
the ages of A and B are in ratio 4:3. After 6 years, there ages will be in ratio 11:9. A's present age is?
Asked by annusurana1691
29th October 2021
8:24 PM
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CBSE XII Science Chemistry Solutions
solution
Asked by vekariyaparth61
16th May 2022
4:33 PM
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CBSE XII Science Chemistry Solutions
question
Asked by manishachand010
27th May 2022
10:14 AM
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NEET NEET Chemistry Some Basic Concepts in Chemistry
with 63gm of oxalic acid how many litres of N/10 soln can be prepared
Asked by humanasim01
27th June 2022
7:20 AM
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NEET NEET Chemistry Some Basic Concepts in Chemistry
with 63gm of oxalic acid how many litres of soln N/10 can be prepared
Asked by humanasim01
27th June 2022
7:21 AM
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CBSE VIII Science Materials: Metals and Non Metals
chemical solutions
Asked by aditisupriya818
5th November 2023
3:06 PM
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ICSE IX Chemistry Matter and its Composition
what is solution
Asked by aamrinkhanam422
24th December 2023
11:22 AM
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