Question # 1

Acetaldchyde and ketone form addition product with

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Phenyl hydrazine

Hydroxylamine

Hydrazine

hydrogen cyanide

One of the following is not type of polymer

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homopolymer

copolymer

heteropolymer

terpolymer

∆H=∆E is true for which of the following reaction

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K+H2O----->KOH+H2

N2+3H2------>2NH3

AlCl3+3NaOH--->Al(OH)3+3 NaCl

4Na + O2----->2Na2O

what is the exact value of angle in BF3

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90

104.51

119.5

120°

Polysaccharides are

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Polyester

Polyamides

Poly ethers

Polynucleotide

The amino group in 19 alpha-amino acids is primary; only one alpha-amino acid has secondary amino group which one is that

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Alanine

Glutamic acid

Glycine

Proline

Fatty acids are:

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Aliphatic mono-carboxylic acids

Di-carboxylic acids

Tri-carboxylic acids

Tetra carboxylic acids

Poly carboxylic acids

If a polymer has mass 63000, and the molar mass of repeating unit is 63 what is its degree of polymerization is

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10³

10²

10⁵

None of these

Rate of which reaction increases with temperature?

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Exothermic and endothermic reactions

Endothermic reactions

Exothermic reactions

None of these

Detergents are

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synthetic products

natural products

both a and b

none of the above

In beta elimination reaction

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carbon number changes

unsaturated compound is formed

hybridization. ofC remains same

pi bonds are decreased

Which of the following expressions show a heterolytic bond fission

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The atom other than C in a hetrocyclic compound is called as

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Hetroatom

Hetroion

Hetromolecule

Hetroelement

Detergents are

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Synthetic products

Natural products

Both (a) and (b)

None of these

Atomic number of Al is 13. When it forms ionic bond with oxygen the number of electrons lost by 1 Al atom is

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1

2

3

4

Which of the following is most electronegative?

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Carbon

Silicon

Lead

Tin

When 6d orbital is complete, the entering electron goes into:

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7f.

7s.

7p.

7d.

The increase in size of the anion is due to:

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Increase in electron-electron repulsion

Increase in valence shell electrons.

Decrease in valence shell electrons.

Both (a) and (b).

Which functional group is present in glycerol tristearate

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Carboxylic acid

Alcohol

Aldehyde

Ester

What is the molarity of the solution that contains 20 grams of NaOH in 500 ml of solution [Na = 23, O = 16, H = 1]

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0.25

0.5

1

20

The substance having highest conductivity at room temperature among the following is

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0.1 N HCl

0.1 N NaCl

Graphite

Glass

The formula of esters is

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