Question # 1

Elements having high ionization potential values are

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metals

non- metal

liquids

solid

One of the environmental problem is the formation of oil slicks when oil is spilled form tankers in sea water. Which treatment is suitable to remove oil slicks

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Blow air

Add Na₂CO₃

Use a specially made sorbent having fluorine trapped in it

Use a sorbent having Al₂O₃trapped in it

The critical temperature of NH₃ is greater than CO₂ due to its:

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Greater polarity

Stable polarity

Lesser polarity

None of above

Which of the following gases diffuse quickly:

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N₂

NH₃

CO₂

Cl₂

During thunderstorms, water dissolves

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Dust particles

HCl

Nitric acid

Clouds

Which of the following bonds is not present in NH4CL

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lonic bond

Covalent bond

Co-ordinate covalent bond

De-localized covalent bond

The structure of protein helps protein to

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be in proper shape

attach substrate

perform is function

All of these

All gases can be compressed by:

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Keeping constant pressure

Decreasing pressure

Increasing pressure

None of above

Which of the following is primary alkyl halide

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IsopropyI halide

Sec-butyl halide

Tert-buryi halide

Neo-pentyl halide

Agriculture consumes part of fresh water:

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1%

2%

69%

23%

The cause of minamata disease is the pollution of

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Arsenic (As) into atomosphere

Industrial waste having Hg

Organic waste in drinking H₂O

Oil spills in H₂O

The substance added in the paints for improving the mechanical properties is called

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Pigment

Filter

Stabilizer

Binder

The change in heat energy at constant temperature is called

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Enthalpy change

Heat of vaporisation

Bond energy

Internal energy change

Weakest acid among the followings is

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Acetic acid

Phenol

Water

Acetylene

The rate of reaction between two specific time intervals is called

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Instantaneous rate

Average rate

Specific rate

Ordinary rate

Aledehydes ketones can be prepared form alcohols by their:

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Reduction

Oxidation

Decomposition

Synthesis

The base used in Cannizzaro's reaction is

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NaOH

KOH

CHI₃

All of these

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-76 KJ

-57 KJ

-171 KJ

-114 KJ

The functional group of acid amide is

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Hybridized in carbon is:

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sp

sp²

sp³

d²sp

An organic compound will decolorise dill acidified (aq) KMnO₄on warming, but will not decolorise bromine water. What is the compound

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KMnO₄

Ethanol

Ethane

CH₃CH₂Cl

The chemist who synthesized urea form ammonia cyanate was:

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Berzelius

Kolbe

Wohler

Lavoiser

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