Question # 1

Which one of the following substances have garlic odour and a colourless gas.

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CH3OH

HCOOH

CH2=CH2

HC= CH

Chlorine heptoxide (CI₂O₇) reacts with water to form

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Hypochlorous acid

Chloric acid

Perchloric acid

Chlorine and oxygen

Which one of the followings is major product when HBr reacts with 2-butene

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2- bromobutane

1- bromobutane

1-1 di bromobutane

1,2 di bromobutane

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

Which three elements are needed for the healthy growth of plants

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N,S,P

N,Ca,P

N,P,K

N,K,C

The ore CaSO4.2H2O has the general name.

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Gypsum

dolomite

Calcite

Epsom salt

Isopropyl alcohol on oxidation gives

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Acetaldehyde

Acetone

Ether

Propene

Which of the following compounds will not give iodoform test on treatment with I2/NaOH

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Acetaldehyde

Acetone

Butanone

3-Pentaneone

Which one is used as debydrating agent for alcohol.

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H2SO4

Al2O3

H3PO4

All of these

Corundum is

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Al2O3

Na2AlF6

Quartz

Calcium

The pH range of the acid rain is.

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7-6.5

6.5-6

6-6.5

Less than 5

CO₂H is a functional group as

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Alkoxy

Carbonyl

Carboxyl

Hydroxyl

The state of hybridization of carbon atom in Ethyne

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sp

sp²

dsp²

sp³

Which of the following is a typical transition metal.

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Sc

Y

Ra

CO

An element has oxidation state -2, +4, +6 in its compounds. In which group in the periodic table is this element likely to be.

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Grooup III A

Group IV A

Group V A

Group VI A

Which substance is used to convert Grignard reagent to alkane.

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H2O

NH3

Ethyl alcohol

All of these

The disease can be eradicated by using pesticides.

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Malaria

Yellow fever

Sleeping sickness

All of these

Which of the following are alkaline earth metals?

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Be, Mg, Ca

Li, Na, K

Fe, CO, Ni

B, Al, Ga

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