Question # 1

BiCI₃ on hydrolysis forms a white precipitate of

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Bismuthio is acid

Bismuth oxychloride

Bismuth pentachloride

Bismuth hydroxide

The relative rate of diffusion of a gas (molecular wright - 128) as compared to oxygen is

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2 times

1/4

1/8

1/2

Wt. of 112 ml of oxygen at NTP on liquefaction would be

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0.32 g

0.64 g

0.16 g

0.96 g

The rate of a reaction that does not involve gases does not depend upon

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Pressure

Temperature

Concentration

Catalyst

The percentage of nitrogen in urea is

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46

60

70

80

The number of unpaired electrons in the P-subshell of oxygen atom

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1

2

3

4

Wholer prepared ures from

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Ammonia

NH₄CNO

NH₃

uric acid

Which of the following substances is used as an antiknock compound?

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Tetraethyl lead

Lead tetrachloride

Lead acetate

Ethyl acetate

Which quantum number is sufficient to describe the electron is hydrogen atom?

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/

n

m

s

Inert pair effect plays an important role in case of

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F

AI

Si

TI

Gooch crucible used to filter the solution of

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H₂SO₄

HCI

KMnO₄

Both B & C

Maximum number of active hydrogens

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Acetic acid

Glycerol

Methane

Methanol

Which one is not usually used for the crystallization?

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Acetone

Acetic acid

Sulphuric acid

Chloroform

Fertililzer are made by

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Nature only

Artificial methods only

Both artificial and natural methods

None of the above

Which of the following cannot be produced by acidic dehydration of alcohols?

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Ethers

Aldehyde

Alkyl Hydrogen sulphate

Alkene

Fluorine does not show positive oxidation states due to the absence of

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d-orbitals

s-orbitals

p-orbitals

None

Chief air pollutant which is likely to deplete ozone layer

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Suphure dioxide

Carbon dioxide

Nitrogen oxides and chloro flrorocarbons

Rusting of iron is catalysed by

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Fe

O₂

Zn

H⁺

The formula to calcium cyanamide is

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Ca(CN)₂

CaC_2N

CaNCN

CaCHNH₂

SO₂ and NO₂produce pollution by increasing

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Alkalinity

Acidity

Neutrality

Buffer action

Which of the following compounds has the lowest anion to cation size ratio?

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LiF

NaF

Csl

CsF

Which of the following nitrogen fertilizer contain more nitrogen

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NaNO₃

KNO₃

NH₄NO₃

Urea

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