Question # 1

The atomic radii of the elemtns in periodic table.

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Increase from left to right in a period

Do not chage from left to right in a period

Increase from top to bottom in a group

Decrease from top to bottom in a group

¹³ C and ¹⁴ C are both present in nature.

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0,1 %

1.1 %

0.9 %

1.5 %

Matter can be described by both is

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Chemical Properties

Physical Properties

Physical propeties and chemcial properties

None of these

Which is deal with compositon, structure, properties, behavior and changes of matter and energy.

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Technology

Chemistry

Engineering

Science

Which group of the periodic table has the tendency to gain electrons.

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Group -1

Group -17

Group-2

Group -18

The minium amont of energy whcih is required to remvoe an electron from valence shell of the gaseous state of an atom is called.

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Potential energy

Ionization energy

Electron affinity

Electronegativity

The distance between the neclei of two carbon atoms in its elemetnal from is

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150 pm

152 pm

154 pm

156 pm

Which of the following contains oxalic acid

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Orange

Sour Milk

Tomato

Tamarind

The study of theinteraction between drugs and biological targets, as wellas the development of new medicinal agents.

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Inorganic Chemistry

Organic chemistry

Medicinal Chemistry

Environmental chemistry

The enthalpy of reaction C+O2 ------ CO2

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-571.6 kJ

-393.5 kJ

+53.8 kJ

-110.5 kJ

No reaction occurs if the energy of reacting particles.......activation energy.

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Lower than

Greather than

Nearest to

Equal to

Whcih one of the following wil show negligible effect of termperture on its solubility.

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KCl

KNO3

NaCl

NaNO3

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Chemistry 9th Class English Medium Online Test MCQs With Answers

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