Question # 1

Cement is a mixture of

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Clay and clinker

Clay, lime stone and gypsum

Lime stone and gypsum

Lime stone and clay

Which one of the following does not react with dilute sulphuric acid.

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Mg (OH)2

Mg

MgO

Mg(NO3)2

Which one of the following set of raw material is most suitable for manufacture of urea.

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CH4, N2 and CO2

H2, N2 and CO

H2,CO2 and H2O

H2O, N2 and H2

Starch is

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Monosaccharide

Disaccharide

Polysaccharide

Oligosaccharide

Which one of the following is a metalloid.

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sulphur

Antimony

Mercury

Zinc

Which one of the following oxides is amphoteric in nature.

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MgO

Na2O

SO2

ZnO

CO₂H is a functional group as

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Alkoxy

Carbonyl

Carboxyl

Hydroxyl

The element of 2nd period, which has highest ionization energy from the following is

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Be

C

N

O

The oligosaccharides contain number of hexose unit.

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2 to 7

2 to 8

2 to 9

2 to 100

When CO₂is made to react with ethyl magnesium iodide, followed by acid hydrolysis, the product formed is

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propane

propanoic acid

propanal

propanol

Ester are formed the reaction of carboxylic acid with.

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Alcohol

Ethers

Aldehydes

Alkyl halides

Which are correct oxidation states for lead

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+1, +2

+3 , +5

+2 ,+4

+4 only

Which one of the following polymers is called a polyamide

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Nylon

Rayon

Terylene

Orlon

Which one of the following oxide is brown in colour.

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NO

NO2

N2O

N2O3

Which complex shows zero oxidation state of the transition metal.

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[Fe(CO)5]

K3[Fe(CN)6]

K2[Fe(CN)6]

[Cu(NH3)4]SO4

Iodine deficiency in diet is known to cause.

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Beri Beri

Goiter

Rickets

Night blindness

Which alkyl halide does not form Grignard's reagent.

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CH3-Br

CH3-Cl

CH3- F

CH3-I

The mean residence time of methane in atmosphere in

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1-2 years

3-4 years

3-5 years

3-7 years

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