Question # 1

Which catalyst is used in contact process

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Fe₂O₃

V₂O₅

SO₃

Ag₂O

Which one of the following compound does not react with NaOH and I2 and also does not form Iodoform.

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C2H5OH

CH3CHO

CH3-CO-CH3

C2H5-O-C2H5

The oligosaccharides contain number of hexose unit.

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2 to 7

2 to 8

2 to 9

2 to 100

What is the oxidation state of Xenon in XeOF2

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0

+2

+4

+6

Methyl alcohol can be represented by all of the following words or symbols except.

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CH3OH

Wood spirit

Methanol

Grain alcohol

Fluorine is in group VII A of periodic table. Its chemistry will most closely resembles that of.

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Argon

Boron

Iodine

Sulphur

Chemical formula of stibnite on.

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BaSO4

Sb2S3

FeS2

ZnS

The fiber which is made from acrylonitrile as monomer

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PVC

Polyester fiber

Rayon fiber

Acrylic fiber

Which furnace is used to prepared steel

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Blast furnace

Pudding furnace

Bessemer converter

Pyrite furnace

Bone ash contain calcium phosphate

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40%

50%

70%

80%

Paraldehyde is used as a

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Medicine

Poison

Polymer

Dye

Boric acid is used as eye wash due to its

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Weakly acidic property

Antiseptic nature

Antibiotic nature

Weakly basic properties

The number of acidic hydrogen present in 1- Propyne is

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1

2

3

4

Which one of the following compounds will form red precipitate with ammoniacal cuprous chloride

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Acetylene

Ethylene

Benzene

Methane

Chemical composition of colemanite is

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Ca₂B₆O₁₁. 5H₂O

CaB₄O₇. 4H₂O

Na₂B₄O₇.4H₂O

CaNaB₅O₉. 8H₂O

Which is called milk of magnesia.

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MgCO3

Mg(OH)2

MgSO4

MgCl2

Which one of the following is calcareous material

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Marine shells

clay

Shale

Blast furnace slag

Which one of the following is the macronutrient for plants.

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Boron

Zinc

Calcium

Nitrogen

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