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CBSE - XII Science - Chemistry
0.849 m solution of a non-volatile, non-electrolyte solute has the freezing point 0.156 degrees lower than that of benzene. What is the value of molal freezing point depression constant of benzene?
Asked by tanbirmunshi700
17th March 2024,
2:14 PM
CBSE - XII Science - Chemistry
The molar specific heat capacity for a monoatomic gas, if it is expanding under the condition Pa V5/3 is
Asked by hellhertzhertz
14th January 2024,
1:21 PM
CBSE - XII Science - Chemistry
for a travelling wave travelling on a string Y = Asin(kx-wt) the potential energy per unit volume is
Asked by radhikaagrawal2311
1st January 2024,
10:39 PM
CBSE - XII Science - Chemistry
xKIO, +yKI+zHCl → alCl+bKCl+cH₂O (Balanced equation) x, y, z, a, b & c are coefficients in balanced equation (A) sum of coefficients x, y & z is 9 (B) sum of coefficients x, y & z is 7 (C) sum of coefficients a, b & c is 9 (D sum of coefficients a, b & c is 7
Asked by keshrianuska
24th May 2023,
12:40 AM
CBSE - XII Science - Chemistry
buten-2-al or but-2-enal Which one is correct ? (Organic Chemistry)
Asked by chiragd2706
11th April 2023,
1:57 PM
CBSE - XII Science - Chemistry
1. Which of the following is the most stable complex species? (a) [Fe(C2O4)3]3- (b) [Fe(CN)6]3- (c) [Fe(CO)5] (d) [Fe(H2O)6]3+
Asked by paresh0311
1st March 2023,
12:36 PM
CBSE - XII Science - Chemistry
Please answer fast Assertion (A): Zinc is not regarded as a transition element. Reason (R): In zinc, 3d orbitals are completely filled in its ground state as well as in its oxidised state. Select the correct answer to these questions from the codes (a), (b), (c) and (d) an given below. (a) Both Assertion (A) and Reason (R) are true and Reason (R) is the correct explanation of the Assertion (A). (b) Both Assertion (A) and Reason (R) are true, but Reason (R) is not the correct explanation of the Assertion (A). (c) Assertion (A) is true, but Reason (R) is false. (d) Assertion (A) is false, but Reason (R) is true.
Asked by sagarmishra
1st March 2023,
12:33 PM
CBSE - XII Science - Chemistry
Please answer Q.17 from board paper. Assertion (A): Nucleophilic substitution of iodoethane is easier than chloroethane. Reason (R): Bond energy of C — CI bond is less than C — I bond.
Asked by anubhutiupadhaya
1st March 2023,
12:30 PM
Browse free questions and answers Chapters
- 1 The Solid State
- 2 Solutions
- 3 Electrochemistry
- 4 Chemical Kinetics
- 5 Surface Chemistry
- 6 Isolation of Elements
- 7 The p-Block Elements
- 8 The d-Block and f-Block Elements
- 9 Coordination Compounds
- 10 Haloalkanes and Haloarenes
- 11 Alcohols, Phenols and Ethers
- 12 Aldehydes, Ketones and Carboxylic Acids
- 13 Amines
- 14 Biomolecules
- 15 Polymers
- 16 Chemistry in Everyday Life
