Beta Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE-I (Conceptual Questions)>Q 33

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An oxide of a metal (M) contains 40% by mass of oxygen. Metal (M) has atomic mass of 24. The empirical formula of the oxide is:

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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>EXERCISE-I (Conceptual Questions)>Q 34

A compound contains

38.8 % C, 16 % H

, and

45.2 % N

. The formula of the compound would be:

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Beta Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE-I (Conceptual Questions)>Q 35

The simplest formula of a compound containing

50 %

of element

X

(at. wt. 10) and

50 %

of element

Y

(at.

w t = 20

) is

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Beta Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE-I (Conceptual Questions)>Q 36

Which of the following compounds has same empirical formula as that of glucose?

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Beta Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE-I (Conceptual Questions)>Q 39

On analysis, a certain compound was found to contain iodine and oxygen in the ratio of $254 : 80$ . The formula of the compound is:

(At mass $I = 127, 0 = 16$ )

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Beta Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE-I (Conceptual Questions)>Q 40

The number of atoms of

Cr

and

O

in a compound are

4.8 \times 10^{10} & 9.6 \times 10^{10}

, respectively. Its empirical formula is

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Beta Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE-I (Conceptual Questions)>Q 41

Insulin contains 3.4% sulphur. What will be the minimum molecular weight of insulin?

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Beta Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE-I (Conceptual Questions)>Q 43

Caffeine has a molecular weight of

194 u

. If it contains 28.9% by mass of nitrogen, number of atom of nitrogen in one molecule of caffeine is

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Beta Question Bank for Medical: Chemistry>Chapter 1 - Some Basic Concepts of Chemistry>EXERCISE-I (Conceptual Questions)>Q 44

In a gaseous reaction of the type

$aA + bB ⟶ cC + dD$ ,

which statement is wrong?