Question # 1

The reaction goes from left to right , if:

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Qc = Kc

Qc > kc

Qc<Kc

Qc = 0

Which of the following salt is soluble in water.

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NaCl

KCl

Na₂SO₄

All of them

Out of twenty how many amino acids can by synthesized by human body?

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Five

Ten

Seven

Twelve

The elements that do not conduct heat and electricity are called.

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Metallurgy

Non metal

Metalloid

Alloy

In the troposphere (lowest layer), the temperature decreases form 17°C to;

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-58°C

-93°C

-61°C

-49°C

Which compound do not produce in the halogenation of methane.

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Chloroform

Carbon tetrachloride

Carbon black

Chloromethane

In solvay's process slaked lime is used to:

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Prepare CO₂

Prepare quick lime

Recover ammonia

Form Na₂CO₃

Functional group of Alcohols is

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-COOH

-C=0

C-O-C

-OH

Which one of the following disease causes severe diarrhea and can be fatal:

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Jaundic

Dysentery

Cholera

Typhoid

The freezing point of water is:

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10 ^oC

100^oC

0^oC

46^oC

Which salt is used as a table salt?

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NaCl

Na₂CO₃

Na₂SiO₃

NaCl

DNA was discovered by

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J .Watson

Funk

Robert brown

Hopkins

Temporary hardness is removed by adding.

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Quick lime

Slaked lime

Lime stone

Lime water.

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