Question # 1

The diameter of rotary kiln in the manufacture of Portland cement is.

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1 to 2 feet

2 to 4 feet

4 to 8 feet

8 to 15 feet

Which meal is least reactive

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Li

NaOH

K

Pb

Starch is

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Monosaccharide

Disaccharide

Polysaccharide

Oligosaccharide

What type of reaction occurs between ethene and hydrogen.

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Addition

Substitution

Oxidation

Dehydration

In which one of the following sets do all three particles have same number of total electrone

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F- ,Cl-,Br-

Li+ , Na+ , K+

N^--3, O-2, F-,

Na+, Mg+2, K+

Which of the following is not directly prepared from CH₃COOH

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Ethyl acetate

Acetyl chloride

Acetic anhydride

Acetamide

An ester can be prepared by the reaction of.

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Two alcohols

Alcohol and an aldehyde

An alcohol and an organic acid

an acid and a ketone

The anhydride of HCIO₄is

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CIO

CIO₂

CIO₃

CI₂O₇

Ortho boric acid on strong beating gives.

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Borax

Boron oxide

Metaboric acid

Tetraboric acid

Which is not used of Borax

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Softening of water

As medicine for washing eyes

As flux in metallurgical operations

To make quartz

Which one of the following group of Periodic table called chalcogen family.

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Group III A

Group VA

Group VI A

Group VII A

The brown gas formed when metal reduces HNO3 is

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N2O5

N2O3

NO2

NO

An aldehyde is reduced to alkane with hydrazine is the presence of

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KOH

NaOH

CaO and NaOH

Ca(OH)2

Aluminium is used for making petrol and milk storage tanks because it is

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Conductor

Non magnetic

Excellent reflected

Corrosion resistant

In which reactions alkane is not produced

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Subatier's and Sendern reaction

Koibe's reaction

Wolf -Kishner's reduction

Dow's process

Which one of the following enzyme is used for the treatment of blood cancer in children.

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Thrombin

Asparaginase

Glucokinase

Fumarase

The nitrogen present in some fertilizers helps plants

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to fight against diseases

to produce fat

to undergo photosynthesis

to produce protien

Phenol is the derivative of

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Alkane

Aromatic hydrocarbon

Aliphatic hydrocarbon

Alkene

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