Question # 1

0.5 mole of CH₄and 0.5 mole of SO₂gases have equal

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Volume

Mass is gram

Total number of atoms

Number of molecules

Isotopes of an element differ in

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Number of protons

Number of electrons

Number of neutrons

Number of electrons and protons

Metal tend to lose electrons, becoming:

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Metals

Positively charged

Negatively charged

(a)And (c)

The percentage of which element in the organic compound is determined by the difference method

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Carbon

Hydrogen

Nitrogen

Oxygen

When nitrogen is 5.6 grams in NO₂. then number of moles of NO₂is

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0.5

0.4

0.04

0.05

An ion bearing positive charge is called:

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Cation

Positron

Anion

None of above

X-ray work has shown that the diameters of atom are of the order of

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8 x 10^-10m

2 x 10^-10m

8 x 10^-8m

2 x 10^-8m

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99.2%

99.5%

90.5%

96.2%

CO+ is an example of

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Stable molecule

Anionic molecule ion

Cationic molecular ion

Free radical

CL₂, N₂ and O_{2 are:}

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Diatomic molecules

Hetero atomic molecules

Poly-atomic molecules

Mono-atomic molecules

Hemoglobin contains nearly:

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10,000 atoms

100 atoms

1000 atoms

1 atom

The quantitative relationship between the substances according to balanced equation describes

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Reversible reactions

Stoichiometry

Limiting reacting

Percentage composition

The empirical formula of a compound is CH₂O. What may be the compound

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C₂H₅OH

C₆H₅OH

HCOOH

A beaker contains 9 grams of water. The number of H atoms is

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6.02 x 10²³

3.01 x 10²³

6.02 x 10²⁴

3.01 x 10²⁴

One mole of C₂H₅OH contains the number of H-atoms

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6.02 x 10²³

3.61 x 10²⁴

1.81 x 10²⁴

6.02 x 10²⁴

NH₃, HCL, H₂O, HL are:

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Diatomic molecules

Poly-atomic molecules

Mono-atomic molecules

Hetero atomic molecules

The atom of an element is

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The smallest particle

The fundamental particle

The independent particle

The charged particle

Isotopes differ in

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properties which depend upon mass

arrangement of electrons in orbitals

chemical properties

the extent to which they may be affected in electric fields

Al³⁺is a symbol for aluminium

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Atom

Ion

Cation

Anion

Which one of the following step is not involved in determination of empirical formula

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Determination % of each element

Determination of gram atom of each element

Determination of isotopes of each element

Determination of atomic ratio of element

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