Question # 1

Newspapers can be recycled again and again by how many times

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5

2

4

3

The reaction between fat and NaOH is called?

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Esterification

Hydrogenolysis

Fermentation

Sponification

Which is inorganic polymer?

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Plastic

Rubber

synthetic fiber

Lipids

Which of these polymers is a synthetic polymer

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Animal fat

Strach

Cellulose

Polyester

Which woody raw material is used of the manufacture of paper pulp?

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cotton

bagasse

poplar

rice straw

How many times a newspaper can be recycled

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02

05

08

10

Empirical formula of monosaccharide is

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(CHO)_n

CH_nO_n+1

C_nH₂O

(CH₂O)_n

Glass is a

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Micro-crystalline solid

Super-cooled liquid

Gel

Polymeric mixture

The crystals formed due to London forces of interaction are

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ionic

covalent

molecular

metallic

The clotting time of blood is increased due to the deficiency of

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vitamin A

vitamin K

vitamin D

vitamin C

A combination of glucose and fructose is called

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sucrose

table sugar

a & b

Lactose

What is the volume in cm³of 3.01 x 10²³molecules of O₂gas at S.T.P

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1000 cm³

11000 cm³

1120 cm³

11200 cm³

Phosphorous helps the growth of

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Root

Leave

Stem

Seed

The color of Cr³⁺ion is

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Violet

Blue

Pink

Green

Alkenes combine readily with electrophillic reagents such as halogens giving

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Haloalkanes

Gem-dihalides

Vicinal dihalides

Vinyl halides

How many moles of hydrogen atoms does 3.2 g of methane, CH₄, contain?

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0.02

0.2

0.4

0.8

CaC₂on hydrolysis form

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CH₄

C₂H₄

C₂H₂

C₆H₆

Which of the following is correct?

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Reduction of any aldehyde gives secondary alcohol

Reaction of vegetable oil with H₂SO₄gives glycerine

Alcoholic iodine with NaOH gives iodoform

Sucrose on reaction with NaCl gives invert sugar

When a carbon atom forms single bonds with other carbon atoms, these hybrid orbitals overlap with the orbitals of hydrogen to form four bonds which are

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Three sigma and one P_i

Two sigma and two P_i

One sigma and three P_i

sigma

Butyric acid was named from butyrum means:

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Red out

Vinegar

Butter

Milk

What happens when isotonic solution of A (mol.wt.342) and B (mol.wt 60) are put in to communication through semipermeable membrane?

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Transference of solvent from solution A to that of B take place

Transference of solvent from solution B to that of A takes place

No transference of solvent from solution A to that of B takes place

Change in temperature of solutions takes place

Group VI-B of transition elements contains:

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Zn, Cd, Hg

Fe ,Ru ,Os

Cr, Mo ,W

Mn, Te, Re

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