Question # 1

Asbestos is commonly used in making

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wall board

black board

soft board

hard board

An organic compound made from oxidation of ethanol is

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Formic acid

Acetic acid

Malonic acid

Citric acid

Acetic acid is obtained from:

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Red out

Vinegar

Butter

Milk

What is the pressure of 2 mole of NH₃ at 27°C when its volume is 5 lit.in Van der Waals equation?(a = 0,17,b = 0.03711)

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10.33 atm

9.333 atm

9.74 atm

9.2 atm

Which of the following statement about ribose is incorrect

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Poly hydroxyl compound

It is an aldo sugar

Contain six carbon atoms

It exhibit optical activity

Surface and ground water sources are contaminated by various human activities which of the followings is not a human activity that causes contamination in fresh water

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live stock waste

oil leaks and spills

disposal of industrial effluents

rain

Dehydrogenase is an erample of

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Transferase

Hydrolase

Lyase

Oxido-reductase

How many times a newspaper can be recycled

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02

05

08

10

Critical temperature for a gas depends upon

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Shape of molecule

Size of molecules

Inter molecular forces

All of these

Which of the following is the repeating monomeric unit in cellulose?

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sucrose

maltose

cellobiose

glucose

The attracted forces which are created due to repulsion of electronic cloud of the molecules are:

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ion-dipole forces

dipole-dipole forces

dipoles-induced dipole forces

instantaneous dipole-induced dipole

Acetic acid is also named.

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Methanoic acid

Ethanoic acid

Propanic acid

Butanoic acid

The only alcohol that can be prepared by the indirect hydration of alkene is

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ethyl alcohol

propyl alcohol

isobutyl alcohol

methyl alcohol

The geometrical shape of a transition complexion is related to the state of hybridizing of the central atom. What is trigonal bipyramidal

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sp³

dsp²

dsp³

d²sp³

The amount of Si in the lithosphere is about

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27.72%

30.35%

35.30%

40.21%

Either, an organic compound has close resemblance in structure and thus a derivative of:

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Water

Oxides of lithium

Oxides of magnisium

Oxides of aluminium

The presence of a double bond in a compound in the sign of:

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Saturation

Unsaturation

Subsitution

None

Which of the following has highest oxidation potential

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Be

Li

Na

Ca

Which of the following is a method of converting a unsaturated ketone into unsaturated hydrocarbon?

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Aldol condensation

Reimer Tiemann reaction

Cannizaaor's reaction

Wolf-kishner reduction

Sp³hybird orbitals are oriented at an angle of

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107.5°

108.5°

109.5°

103.5°

Introduction of a second methyl group in methylbenzene will give how many isomeric dimethyllenzenes

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2

1

3

4

Which of the following d-block elements can show the highest oxidation number in its compounds

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Chromium

Copper

Nickel

Manganese

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