Question # 1

Which one of the following pairs of metal reactive directly with nitrogen

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Na and Mg

Li and Mg

Mg and Ca

Li and Be

Which one is perchloric acid

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HClO

HClO₃

HClO₄

Acetaldehyde undergoes, aldol condensation in the presence of.

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dil HNO3

DIL NaOH

dil HCl

Conc. H2SO4

The process used to improve quality of gasoline

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Thermal Cracking

Reforming

Combination

Steam Cracking

In Pakistan pulp is usually bleached with Cl2. The residual chlorine is removed from pulp by an antichlor which is

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dil HCl

dil NaOH

Water

NaCl

The oxides of metal sare generally

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Acidic

Basic

Neutral

Amphoteric

What are the total numbers of periods in the modern periodic table.

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3

5

7

8

Which one is not an argillaceous material.

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Clay

Shale

State

Gypsum

Which elements are deposited at the cathode during the electrolysis of brine in diaphragm cell

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H₂

Ba

Ra

Rn

When Cu reacts with conc. HNO3 , which one of the following gases is evolved

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N2O

NO

NO2

N2O5

Chlorobenzene on nitration with conc. HNO3 and Conc. H2SO4 gives.

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m -chloronitrobenzene

o and p chloronitrobenzene

o and m chloronitrobenzene

mixture of O2 m and p chloronitrobenzene

The reaction between fat and NaOH is

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Estrification

Hydrogenolysis

Fermentation

Saponification

Which is not a calcarious material.

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Lime

Clay

Marble

Marine shell

An atom or group of atoms, which confers characteristic properties to organic compounds, are called.

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Isomerism

Metamerism

Ligands

Functional groups

Which of the following is not directly prepared from CH₃COOH

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Ethyl acetate

Acetyl chloride

Acetic anhydride

Acetamide

Which of the following statement is correct

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Na atom is smaller than Na⁺

Na atom is larger than K atom

F atom is smaller than F^-

F atom is larger than F^-

Absolute alcohol is that which is

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100%

95%

Ethanol mixed with methanol

Ethanol mixed with H2O

Biphenyl is

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Monocyclic aromatic compound

Polyclic aromatic compound

Polycyclic fused ring compound

Alicyclic compound

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