Atoms Molecules And Chemical Arithmetic QUESTIONS AND ANSWERS

IIT JEE : Atoms Molecules And Chemical Arithmetic QUESTIONS AND ANSWERS :: part1 : 16 to 20

Following IIT JEE Entrance Multiple choice objective type questions and answers will help you in Maths, Physics and Chemistry 2024 examinations :

16.Which of the following does not have same percentage ofcarbon as in ethane?

2-Butene

Cyclohexane

Cylohexne

2-Methyl but-2ene.

17.The percentage of hydrogen in water and hydrogen peroxide is11.1 and 5.9% respectively. These figures illustrate

Law of multiple proportions

Law of conservation of mass

Law of reciprocal proportions

Law of combining volumes.

18.The number of moles of lead nitrate which are required to be decomposed to produce 48 of Oxygen

3 mol

1.5 mol

0.15 mol

0.3 mol.

19.30 mL of an acid is neutralized by 15 mL of 0.2 N alkali. The strength of the acid is

0.1 N

0.2 N

0.3 N

0.4.

20.The compounds with identical crystal structures and analogouschemical formulae are called

allotropes

isotones

isomorphs.

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