Question # 1

Carboxylic acid can be prepared from the reaction of Grigard's reagent with:

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Aldehydes

Ketones

Formaldehyde

CO₂

Which group activates the benzene ring

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-COOH

-COR

-CHO

-OH

Potassium fertilizers are especially useful for:

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Tobacco

Potato

Coffee

All of these

The high molecular weight materials which yield on hydrolysis the amino acids is called:

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Carbohydrates

Lipids

Fatty acids

Proteins

A polymeric substance that is formed in the liquid state and then hardened to a rigid solid is called a

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fibre

plastic

varnish

polyamide resin

The collision which results in chemical reaction

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Effective collision

Ineffective collision

Useless collision

All of the above

The substitution of a'-H' by '-NO2' group in benzene is called

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Nitration

Sulphonation

Ammunolusis

Reduction of benzene

Photo chemical smog contains ______ as main reactants

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Nitrons oxide and unburnt hydrocarbons

Nilric oxide and unburnt hydrocarbons

No and burnt hydrocarbons

N₂O and burnt hydrocarbons

The rate of diffusion of a gas is:

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Inversely proportional to its density.

Inversely proportional to square root of its molecules mass.

Directly proportional to molecular mass.

Directly proportional to its density.

Transportation causes to produce CO₂ in atmosphere:

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72%

73%

74%

75%

The proteins which give an amino acid and non-protein group on hydrolysis are known as

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Derived protein

Albumins

Conjugated simple protein

Conjugated protein

The volume occupied by 1.4 g of N₂at S.T.P is

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2.24 dm³

22.4 dm³

1.12 dm³

112 cm³

Which electronic configuration corresponds to an element of Group ||Z-A of the periodic table?

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1s, 2s², 2p⁶, 3s², 3p⁶, 4s²

1s², 2s², 2p⁶

1s², 2s², 2p⁶, 3s², 3p³

1s², 2s² , 2p⁶, 3s², 3p¹

Identification of a substance, determination of its structure an quantitative analysis of its composition are the aspects covered by:

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Modern analytical physics.

Mechanical chemistry.

Biochemistry.

Modern analytical chemistry.

The divisibility of atom was shown by

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Stoney

J.J. Thomson

Millikan

Rutherford

When carbon dioxide is passed through the R - Mg - X is produced

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Any carboxylic acid

Propanoic acid

Propanedioic acid

None of these

Borax is a common mineral of alkali metal sodium. Its formula is

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Na₂B₄O₇

Na₂,B₄O₇. 10H₂O

Na₂B₃O₆. 10H₂O

Na₂B₄O₇- 5H₂O

The force which holds the atoms together to form a compound is called

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A chemical bond

Van der waal's force

Dispersion force

London force

Which is not a calcareous material

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Lime

Clay

Marble

Marine shell

Major fertilizers with micro-nutrients are:

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Nitrogeneous

Phosphalic

Potash

All of these

Peat before conversion to bituminous coal is converted to

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Lignite

Anthracite

Asphalt

None

Which of the following is not a property of cathode rays

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They can produce x-rays when they strike a heavy metal anode

They can cause reduction reaction

They produce fluorescence in rare earth and minerals

They comprise neutral particles

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