Question # 1

Cholesterol is a precursor of steroid hormones. Choose the class of steroid

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A carbohydrate

A hydrocarbon

A natural lipid

A protein a hydrocarbon

Stability of Cu-metal is due to filled of d-orbital

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Half

Completely

Partially

Quarterly

Which pair of transition elements shows abnormal electronic configuration?

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Sc and Zn

Cu and Sc

Zn and Cu

Cu and Cr

Palmitic acid & steanic acid are obtained from process of fats & oils:

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Reducing

Neutralization

Oxidation

Hydrolysis

The Cl- ion present at the corner of the unit cell is NaCl crystal, contributes

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1/8 th

1/4 th

1/2 th

1

An example of simple protein is

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lipoprotein

Cholesterol

lecithin

globulin

The compressibility factor of an ideal gas is

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0

1

2

4

Amorphous solids:

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have sharp melting point

undergo clean cleavage when cut with knife

have prefect arrangement of atoms

can possesses small regions of orderly arrangement

The word paper is derived from the name of which reedy plant

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rose

sun flower

papyrus

water hyacinth

Photochemical smog consists of higher concentration of:

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Oxidants

Ozone

a & b

NO₃

When ethyl magnesium bromide is treated with carbon dioxide and the product hydrolyzed we get

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formic acid

propionic acid

oxalic acid

acetic acid

Ammonia is injected under the soil surface:

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1 Feet

6 inches

6 Feet

9 inches

By simply reacting Grignand's reagent with water we get

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An alkane

Higher alkane

An alkene

An alkyne

If the value of principal quantum number is 3. the total possible values for magnetic quantum number will be

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1

4

9

12

Which one of the following is not a nuclelphile

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H₂O

H₂S

BF₃

NH₃

The acid present in vinegar is

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CH₃COOH

HCI

H₂SO₄

HCOOH

In a compound an atom has negative oxidation state because

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Atom is negatively charged

Atom acts as cathode

Atom is more electronegative

Atom has lowest ionization energy

Which one of the following has discontinuous solubility curve

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CaCI₂6H₂O

NaCI

KCI

NaNO₃

Ketones are prepared by the oxidation of

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Primary alcohol

Secondary alcohol

Tertiary alcohol

None of these

The temperature at which the vapour pressure of a liquid becomes equal to external pressure is

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Melting point

Sublimation point

Inversion point

Boiling point

Alkyl benzenes are readily oxidized by axidfied

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KMnO₄

K₂CO₃

MnO₄

H₂SO₄

Al³⁺is a symbol for aluminium

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Atom

Ion

Cation

Anion

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