Question # 1

Night blindness is because of deficiency of:

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Vitamin A

Protein

Vitamin C

Vitamin D

Which acid is used an electrolyte in lead storage battery?

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H₂SO₄

HNO₃

HCl

CH₃COOH

Dehydrohalogenation takes place in the presence of .

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NaOH aqueous

Alcoholic KOH

Aqeous KOH

Alcoholic NaOH

The color of hydrogen Iodide is:

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Colourless

Black

Red

Pink

Some orchids attracts bees for pollination by producing.

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alkanes

almenes

alkynes

all the above.

A sea level the boiling point of water is.

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0^oC

98^oC

100^oC

110^oC

How many % age of nitrogen present in air by volume?

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70%

75%

78%

80%

Building and Monuments lose their beauty and shine due to

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U.V radiations

Chlorofluoro carbons

Acid rain

IR radiations.

Which of the followings is a disaccharide?

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Glucose

Fructose

Sucrose

Starch

Soda time is a mixture of:

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CaO and NaOH

CaCI2 and NaOH

CaO and ca(OH)2

CaCI2 and KOH

How many % age of nitrogen in urea fertilizers?

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40.6

45.6

46.6

50

Which disease cause when humans use water of industrial effluents.

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Cancer

Asthma

Jaundice

cholera

Which disease causes bone and tooth damage?

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Fluorosis

Hepatits

Cholera

Jaundice

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