Question # 1

The reaction between an acid and a base produces.

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Salts and water

Salt and gas

Salt and an acid

Salt and an base

The density of water is ................. at 4^oC

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1 gcm^-1

2 gcm^-1

3 gcm^-1

4 gcm^-1

Indicators are the

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Inorganic compounds

Organic compounds

Ionic compounds

Covalent compounds

Concentration of copper are is carried out by process.

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Roasting

Forth floatation

Gravity sepration

Electrostatic separation

Which of the following in insoluble in water.

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Benzene

NaCl

KCl

All of them

Acid used for cleaning metals , tanning and in printing industries, is:

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H2SO4

HNO3

CH3COOH

HCI

The general formula of carbohydrate is:

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C2n(H2O)

CN(H2O)n

Cn(H2O)2n

C2n(H2O)n

The freezing point of water is:

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10 ^oC

100^oC

0^oC

46^oC

Metallurgy involves which of the following steps?

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Mining and enrichment

Reduction

Refining and casting.

All of these

Example of pest is

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Weeds

Herbs

Insect

All of them

Equilibrium constant value "K" is equal to:

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Kt / Kr

Ki / Kr

Kc / Qc

Qc /Kc

^{RNA consists of}

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Ribos

Pentose

Hexose

Trioses

Depending upon temperature variation, atmosphere ins divided into how many regions?

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1

2

3

4

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