### CBSE VI Science Separation of Substances

## **Can we seperate sugar and sand whereas both will not be solid ?**

**Can we seperate sugar and sand whereas both will not be solid ?**

**Jeevanshu**21st October 2017 12:29 PM

### CBSE VIII Science Chemical Effects of Electric Current

## Why do impurities dissolved in water increse its productivity?

**deepikankur**19th December 2017 7:20 PM

### CBSE XI Science Mathematics Permutations and Combinations

## Help me to approach this questin's answer...

**nitishkrnehu09**1st January 2018 4:06 AM

### 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.

**ishita605**2nd January 2018 8:37 PM

### CBSE X Mathematics Pair of Linear Equations in 2 Variables

## Answer the given question

**tultuldutta58**8th January 2018 2:35 AM

### CBSE XI Science Chemistry Equilibrium

## How to reudce volume of a sample solution to half

**haroonrashidgkp**2nd March 2018 11:27 AM

### ICSE IX Chemistry Elements, Compounds and Mixtures

## explain the following with one example 1)suspension 2)emulsion 3)alloy

**nathsantanukumar**2nd April 2018 7:26 PM

### CBSE X Mathematics

## 3x-5y=19 -3x+3y=-1 ------------------ Find y?

**miniprasad**20th April 2018 9:14 PM

### 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}

**pardeepkumar2281**13th May 2018 8:01 AM

### 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

**pardeepkumar2281**13th May 2018 8:04 AM

### CBSE XII Science Chemistry Solutions

## 3.6M sulphuric acid solution is 29% sulphuric acid {H2SO4} . calculate the DENSITY of the solution

**pardeepkumar2281**13th May 2018 8:12 AM

### ICSE IX Mathematics

## 9-(x-4)=y+7 2(x+y)=4-3y

**apndeo0**18th May 2018 10:59 AM

### CBSE X Mathematics

## Solve for x and y, (a-b)x + (a+b)y = a²-2ab-b², (a+b)(x+y)=a²+b²

**CHIDAMBAR**23rd May 2018 7:11 PM

### CBSE XI Commerce Mathematics

## 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.

**deepakagarwal1024**7th June 2018 8:28 PM

### CBSE X Mathematics

## The sides of a triangle are given by the equation y-2=0,y=3x-7,and 2y+x=0

**gautamgupta224**17th June 2018 10:13 AM

### CBSE VIII Mathematics

## (3y-1)/4+(2y+3)/3=(1-7y)/6 solve & verify

**cvshagi**29th June 2018 8:53 PM

### ICSE VIII Chemistry Water

## what is the meaning of solute and solvent

**sharmayashu888**29th June 2018 10:59 PM

### 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.

**dineshchem108**9th July 2018 10:44 PM

### 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

**mohitjoshisnj**30th July 2018 11:42 AM

### CBSE IX Mathematics

## find 4 solutions of x-2y=4

**CP**8th August 2018 6:17 PM

### CBSE IX Chemistry Is Matter Around Us Pure?

## define a solution?

**siddalingaswamikm**11th August 2018 12:36 PM

### ICSE IX Mathematics

## 1/5x+y/9=5 1/3x+y/2=14 Solve for x and y

**drmeghasoni78**17th August 2018 11:29 AM

### 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

**Deepak**19th August 2018 12:58 PM

### ICSE VIII Chemistry Water

## define supersaturated solution

**nathsantanukumar**23rd August 2018 5:58 PM

### JEE Plances JEE (Main) Mathematics

## 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 :

**kmondaldgms**23rd August 2018 11:03 PM

### CBSE VIII Mathematics

## After 12 years, kanwar shall be 3 times as old as he was 4 years ago. Find his present age.

**saini28priyanka60**7th September 2018 8:03 PM

### CBSE VIII Mathematics

## 5xsquare+13×+6

**8340190921**22nd September 2018 7:48 PM

### ICSE IX Mathematics

## xy(3xsquare-2ysquare)-yz(zysquare-3xsquare)+zx(15xsquare-10ysquare) solution?

**susan.thomassj**23rd September 2018 5:48 AM

### ICSE IX Mathematics

## (x+1)(x+2)(x+3)(x+4)-3 please factorise this

**shahidbaba874**26th September 2018 9:44 PM

### ICSE VIII Mathematics

## If the same numbers be added to the numbers 2,4,14 and 22 then the resultant numbers are in proportional. Find the number

**Amansingh4358**28th September 2018 10:22 PM

### ICSE IX Mathematics

## x/7+y/3=5,x/2-y/9=6

**Maninderpalmonty.hpyc**7th October 2018 8:42 PM

### ICSE VIII Mathematics

## 2x+1/3+4x+1/2-3x+5/5=19/10

**meenakalota01**15th October 2018 10:50 PM

### ICSE IX Chemistry Water

## what is solution?

**sugandhpatna**24th October 2018 12:33 PM

### ICSE VI Mathematics

## solve the follwing by trial and error method y+9=12

**nafisa**24th October 2018 8:42 PM

### ICSE IX Mathematics

## 3x-y=23 x/3+y/4=4

**bhabanicricketer10**28th October 2018 6:44 PM

### CBSE IX Mathematics

## ax+by=a-b,bx-ay=a+b find the value of x and y

**subodhk4197**1st November 2018 3:56 PM

### JEE Main Mathematics

## Sir, pls solve the following.

**rsudipto**23rd December 2018 9:08 AM

### ICSE X Mathematics

## 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

**chaitanyachaitanyanani**4th February 2019 4:27 PM

### CBSE X Mathematics

## 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’?

**rushabhjain.av**9th February 2019 9:25 PM

### 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

**s.ojaswini17**15th February 2019 9:09 PM

### CBSE IX Biology The Fundamental Unit of Life

## what is hypotonic solution

**surajsingha711**4th April 2019 9:57 AM

### 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)

**Jatinaa786**4th April 2019 5:18 PM

### 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

**araj02582**8th April 2019 12:56 PM

### 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?

**govtsecschoolnayaganv051**14th April 2019 6:13 PM

### NEET NEET Chemistry Solutions

## Pls solving the follin

**ntg432000**28th April 2019 4:25 PM

### 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

**lakashitaparihar801**30th April 2019 4:31 PM

### CBSE XII Science Chemistry Solutions

## what are isotonic solution?

**sagarshashank26**2nd May 2019 12:32 PM

### CBSE XI Science Chemistry Some Basic Concepts of Chemistry

## More than one options correct.Pls solve.

**pb_ckt**10th May 2019 1:27 PM

### 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?

**hk304446**14th May 2019 1:08 PM

### 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?

**pb_ckt**19th May 2019 11:57 PM

### 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"

**govtsecschoolnayaganv051**20th May 2019 1:57 PM

### CBSE VIII Mathematics Linear Equations in One Variable

**kulsum626**21st May 2019 1:18 PM

### 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

**govtsecschoolnayaganv051**23rd May 2019 2:51 PM

### 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 ?

**arunavamitra50**29th May 2019 12:42 PM

### CBSE XII Science Chemistry Solutions

## Please explain the paragraph given in pic How 100 is written in numerator

**govtsecschoolnayaganv051**10th June 2019 8:44 PM

### 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

**govtsecschoolnayaganv051**11th June 2019 1:38 PM

### 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

**kushagra28feb**13th June 2019 10:09 PM

### CBSE XII Science Chemistry Solutions

## I know that answer is (a) but please explain the reason in detail

**govtsecschoolnayaganv051**16th June 2019 10:55 PM

### ICSE VIII Mathematics 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.

**sangeetayadav030383**19th June 2019 1:26 PM

### ICSE VIII Mathematics 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.

**sadhanayadav3021**25th June 2019 6:41 PM

### 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

**arushidabhade**29th June 2019 5:39 PM

### ICSE IX Chemistry Water

## A solution where solvent is a liquid other than water?

**screen1974**10th July 2019 8:21 PM

### 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

**Balbir**17th July 2019 4:43 PM

### 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

**Balbir**28th July 2019 6:08 PM

### Junior V Mathematics

## If 3/4 of some things is equally 45 what is the total amount

**bijanbiswasrana**16th August 2019 4:50 PM

### 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

**Krishnaladdha07**19th August 2019 8:00 PM

### CBSE XI Science Chemistry Solutions

## Please solve

**brijk456**2nd September 2019 11:58 PM

### CBSE XII Science Chemistry Solutions

## I need all the formulas of solutions lesson.

**nireshbillygraham**8th September 2019 11:39 AM

### CBSE VIII Mathematics 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.

**anchaltamrakar090**8th September 2019 1:55 PM

### CBSE IX Chemistry Is Matter Around Us Pure?

## What is soluble ?

**amitgade248**26th September 2019 7:21 PM

### CBSE VIII Mathematics 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.

**jayshreehase1985**10th October 2019 4:52 PM

### CBSE IX Biology The Fundamental Unit of Life

## What is plasmolysis What is cytoplasm What do you mean by hypotonic solution

**ag8201837**11th October 2019 4:10 PM

### ICSE X Mathematics 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

**miaowmira1900**14th October 2019 2:35 PM

### CBSE XII Science Chemistry Solutions

## Sir, please help me understand how we got the final answer.

**sumayiah2000**5th November 2019 12:47 PM

### ICSE VIII Mathematics 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?

**ayurajela**7th December 2019 8:49 AM

### ICSE VIII Mathematics 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.

**Cl_narayan**30th January 2020 10:36 AM

### CBSE VIII Mathematics Linear Equations in One Variable

## why 10x + 6-x = 9x + 6

**brijeshsharma72609**27th February 2020 12:55 AM

### 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?

**vasu**17th March 2020 7:07 AM

### 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.

**kandappan**31st March 2020 10:27 AM

### CBSE IX Chemistry Is Matter Around Us Pure?

## what is solution?

**kaamal.singh12**4th April 2020 2:24 PM

### CBSE XII Science Chemistry Solutions

## What is aqueous solution? Give example.

**sarswati.comchakia**15th April 2020 5:44 PM

### CBSE IX Chemistry Is Matter Around Us Pure?

## how are solution and suspension different from each other

**geetarohilla**24th April 2020 7:04 PM

### ICSE X Science

## which ion will migrate to cathode in copper sulphate solution

**rashutosh999**11th July 2020 10:40 AM

### CBSE XII Science Chemistry Solutions

## what is roults law

**gangajyothibansode**12th August 2020 6:08 AM

### CBSE VIII Mathematics

## 3√4x-7-5=0

**pandeydivyansh715**20th August 2020 9:24 PM

### CBSE X Mathematics 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

**daskousik2004**21st August 2020 10:35 PM

### CBSE IX Chemistry Is Matter Around Us Pure?

## what is solution

**balajeetelesystemjhajha**5th September 2020 1:22 PM

### CBSE IX Chemistry Atoms and Molecules

## what is a solution??

**kinshukgoel**12th September 2020 1:26 PM

### NEET NEET Chemistry Solutions

## Please explain this

**akashmanu09**8th January 2021 10:21 AM

### NEET NEET Chemistry Solutions

## What is the solution sir ?

**bhagirathdangi12345**12th February 2021 1:42 PM