Question # 1

The degree of unsaturation of fat is measured by

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Iodine number

Oxidation number

Reduction number

Saponification value

Bleaching powder may be produced by passing chlorine over

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calcium carbonate

hydrated calcium sulphate

calcium hydroxide

magnesium hydroxide

The brown gas formed, when metal reduce HNO₃

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NO

NO₂

N₂O₃

N₂O₅

Which of the following element is not present in all proteins

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Carbon

hydrogen

Nitrogen

Sulphur

Which hydride is intermediate in nature.

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NaH

BeH2

NH3

HCl

The disease can be eradicated by using pesticides.

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Malaria

Yellow fever

Sleeping sickness

All of these

The flavour of amylacetate is

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Orange

Apricot

Banana

Pineapple

Which on eof the following alkaline earth metal form peroxide when heated with oxygen at 600 ^oC

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Magnesium

Calcium

Strontium

Barium

The percentage of nitrogen in urea is.

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36%

46%

56%

65%

Plastics are a pollution problem because many plastics

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Are made from petroleum

Are very inflammable

Burn to produce toxic fumes

Decompose to produce toxic products

Which isomerism is not found in alkenes.

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Chain isomerism

Positional isomerism

Geometrical isomerism

Metamerism

The benzene molecule contains.

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Three double bonds

Two double bonds

One double bonds

Delocalized sigma electron charge

The diameter of rotary kiln in the manufacture of Portland cement is.

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1 to 2 feet

2 to 4 feet

4 to 8 feet

8 to 15 feet

Ecosystem is smaller unit of

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Lithosphere

Hydroshpere

Amosphere

Biosphere

Which reaction is disproportionate reaction

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Aldol Condensation

Cannizzaros's reaction

Haloform reactions

Acid Catalyzed reactions

Which enzyme is not involved in fermentation of starch.

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Diastase

Zymase

Urease

Invertase

Which one of the following alkanes will be formed by the hydrolysis of ethyl magnesium bromide

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Methane

Ethane

Butane

do not hydrolysed

The yellowish colour in photochemical smog is due to the presence of.

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NO

NO2

SO2

CO2

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