Beta Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>BEGINNER'S BOX>Q 16

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What quantity of lime stone on heating will give $56 kg$ of $CaO$ ?

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Important Questions on Some Basic Concepts of Chemistry

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Beta Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>BEGINNER'S BOX>Q 18

0.126 g

of an acid requires

20 m L

of

0 ∙ 1 N

N a O H

for complete neutralization

E q . w t .

of the acid is

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Beta Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>BEGINNER'S BOX>Q 20

The vapour density of a compound is

45

. Its molecular formula will be-

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Beta Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE-I (Conceptual Questions)>Q 1

The number of atoms present in

16 g

of oxygen is

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Beta Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE-I (Conceptual Questions)>Q 2

Number of atoms in

4.25 g

of

{NH}_{3}

is (approx.):

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Beta Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE-I (Conceptual Questions)>Q 4

The number of atoms present in

0.5 g

atom of nitrogen is the same as the atoms in -

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Beta Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE-I (Conceptual Questions)>Q 15

Which of the following contains the least number of molecules?

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Beta Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE-I (Conceptual Questions)>Q 16

Number of molecules in

4.25 g

of

{NH}_{3}

, is

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Beta Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE-I (Conceptual Questions)>Q 17

The elements

A

and

B

form two compounds

B_{2} A_{3}

and

B_{2} A

.

0.05

moles of

B_{2} A_{3}

weight

9.0 g

and

0.10

mole of

B_{2} A

weight

10 g

. Calculate the atomic weights of

A

and

B

:-