Question # 1

When Bronsted and Lowry put forward acid base concept?

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1913

1923

1933

1943

Glucose and fructose are;

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trioses

tetroses

pentoses

hexoses

Formula of Urea is.

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KCNO

H₂N-CO-NH₂

HN-CO₂-NH

H₃N-CO-NH₃

Which pollutant is not found in car exhaust gases?

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CO

O₃

NO₂

SO₃

Hydrogen atoms preset in pentane are.

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10

12

14

16

Number of discovered element till today are.

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140

118

90

16

Which diseases cause by the deficiency of vitamin E?

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Rickets

Anemia in babies

Scurvy

Night blindness

Ammonical brine is prepared by dissolving ammonia gas in.

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NaCl

CaCO₃

CaCl₂

Na₂SO₄

The general formula of alkane is

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C_nH_2n+2

C_nH_2n-2

C_nH_2n

C_nH_2n+1

Hard water can cause.

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Stomach disorder

Boiler blasts

Inefficiency of engine

All of them

Petroleum fraction having composition C₅ to C₇ is.

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Petroleum Gas

Petroleum Ether

Kerosine oil

Gasoline or petrol

Chemical formula of chloroform is :

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CH₂Cl₂

CH₃Cl

CHCl₃

CCl₄

The word acid is derived from the.

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Greek word

Latin word

English word

Arabic word.

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