Question # 1

Which one of the following is inorganic fertilizer.

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Manure

Urea

Ammonium nitrate

All of these

Bleaching powder may be produced by passing chlorine over.

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Calcium carbonate

Hydrated calcium sulphate

Anhydrous calcium sulphate

Calcium hydroxide

The percentage of nitrogen in urea is.

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36%

46%

56%

65%

Cannizzaro's reaction is given by

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Acetaldehyde

Formaldehyde

Propanal

Propanone

Which element reacts with carbon to form metal carbide.

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Li

Na

K

All of these

Isopropyl alcohol on oxidation gives

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Acetaldehyde

Acetone

Ether

Propene

Which one of the following proteins transports oxygen in blood stream.

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Insulin

Albumin

Hemoglobin

Globulin

Bleaching powder contains available chlorine approximately

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100%

70-80%

35-40%

10-20%

Which process is used to convert vegetable oil to vegetable ghee.

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Hydrolysis

Oxidation

Esterification

Hydrogenation

The crystals of caustic soda, NaOH, are hygroscopic when these crystals are exposed to air.

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Gain water and remains solid

Gain water and becomes liquid

Lose mass and remain solid

Remain unchanged on heating.

Which elements are deposited at the cathode during the electrolysis of brine in diaphragm cell

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H₂

Ba

Ra

Rn

How much fresh water is used for domestic purpose

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8%

23%

69%

100%

Tincal is a mineral of.

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Al

B

Si

C

Which compound is the most reactive one

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benzene

ethene

ethane

ethyne

Methyl alcohol is not used

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As a solvent

As an anti freezing agent

As a substitute for petrol

For denaturing of ethyl alcohol

The brown gas formed when metal reduces HNO3 is

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N2O5

N2O3

NO2

NO

Which one of the followings is not observed in the combustion of pure methane in a plentiful supply of air

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Water in produced

CO2 is produced

The flame is smoky

Energy is released

Which one of the following uses is not correctly related with the halogen.

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fluorine -------- Teflon

Chlorine ---------Bleaching powder

Bromine ---------------PVC plastics

Iodine -----------Iodex

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