Question # 1

When we mvoe from top to bottom in a group atomic size.

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Decrease

Increases

First increases then decreases

None of the above

When molten copper and olten zinc are mixed together , they give rise to a new substnce called brass. Predict what type of bond is formed between copper and zinc.

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Ionic bond

Coordinate Covalent bond

Metallic bond

Covalent Bond

You are styding the rate of hydrolysis of organic compund staarch under different conditonns of temperature. In which branch of chemistry this topic will fall

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Organic Chemistry

analytical chemistry

Biochemistry

Physical Chemistry

According to Arrhenius concept acid is a substance which dissociates in aqueious solutin to give.

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Proton

Pair of Electron

Hydrogen Ions

Hydroxide ion

Macroscopic propertues are properties that can be visualized by

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Telescope

The naked eye

Microscope

Electron microscope

Which is strongest oxidizing agent.

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Cholorine

Iodine

Fluorine

Bromine

How many atom of carbon are present in one molecule of glucose.

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11

22

12

6

Which of the following is Bronsted base?

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HCl

CH3COOH

H2O

NH3

Formula mass of K2SO4 is.

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174 amu

110 amu

180 amu

145 amu

--------------- acts a catalyst promoting the breakdown of ozone.

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I2

Br2

Cl2

None

Which one is not an Arrhenious acid?

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HCl

H2SO4

CO2

HNO3

Quantum means.

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Virable energy

Fixed energy

High energy

Minimum energy

Value of Avagadro's number is.

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6.6 x 10^-20

6.02 x 10²³

6.00 x 10²⁴

1.32 x 10²³

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