Question # 1

The reagent which forms crystalline osazone derivative when treated with glucose is

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Fehling solution

Phenyl hydrazine

Benedict solution

Hydroxyl amine

Which of the following chlorocompounds is heat easily hydrolysed by hydorxide ion to give the product indicated

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Vinyl acetylene combines with HCl to form:

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Polyacetylene

Benzene

Chloroprene

Divinyl acetylene

The rate constant k of a reaction activation energy Ea and temperature are related by Arrhenius in the form of an equation which is

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Quantity of heat evolved or absorbed during the reaction is measured according to the equation

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Benzene is an example of

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Aromatic compound

Cyclic compound

Aliphatic compound

A cyclic compound

Rare earth elements are

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s-block elements

p-block elements

d-block elements

f-block elements

Grignard's reagent was prepared in:

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1900

1910

1920

1930

Which gas is not a constituent of atmosphere

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Xe

O₃

H₂

F₂

Selection of filter paper depends upon sizes of particles to be:

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Tested

^Filtered

Checked

All of above

With increasing principle quantum number, the energy difference between adjacent energy levels in H atom

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Decreases

Increases

Remains constant

Decreases for low value of Z and increase for higher value of Z

The next homologue of C₁₀H₂₂will be

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C₉H₂₀

C₁₂H₂₆

C₁₁H₂₄

C₁₃H₂₈

Tertiary alkyl halides are practically inert to substitution by S_N2 mechanism because of

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Onsolubility

Instability

Inductive effect

Steric hindrance

which one of the following is a heteroheneous catalysis

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When sodium metal reacts with alcohols

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Hydrogen gas evolves

Sodium hydroxide is obtained

Alcohol is reduced

Alcohol is polymerised

Shape of CIO₃is

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Triangular pyramidal

Tetrahedral

Triangular planar

Triangular bipyramidal

Atoms can be evident by use of electron microscope, field ionization microscope and:

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x-rays

Video camera

Telescope

Compound microscope

Amylacetate flavour is present in:

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Banana

Apple

Jasmine

Orange

In a primary alkyl halide, the halogen atom is attached to a carbon which is further attached to

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Only one carbon atom

Two carbon atoms

Three carbon atoms

one or no carbon atom

Nylon, 6,6 is a condensation polymer of

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Adipic acid and glycol

Phthalic acid and glycol

Adipic acid and hexaethylene diamine

Pthalic acid and hexaethylene diamine

Vegetable oils are

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Unsaturated fatty acids

Glycerides of unsaturated fatty acids

Glycerides of saturated fatty acids

Essential oils obtained from plants

The e.m value for positive rays maximum for:

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Oxygen.

Nitrogen.

Helium.

Hydrogen.

In sp²hybridization bond angle is _____

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120°

180°

109.5°

None

When benzene is burnt in free supply of air, it is completely oxidized to

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CO

CO₂₊H₂O

H₂CO₃

None

Cannizzaro's reaction in not given by

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Formaldehyde

Acetaldehyde

Benzaldyhyde

Trimethylacetaldehyde

Which has maximum protein content?

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Ground nut

Cow milk

Egg

Wheat

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

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Fiber

Plastic

Vanish

Polyamide resin

Which of the following metal requires radiation of highest frequency to cause emission of electrons?

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Na

Mg

K

Ca

The addition of HBr is easiest with

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CH2 = CHCl

CICH = CHCl

CH3 - CH = CH2

(CH3)2 C = CH2

Cathode rays emitted from cathode are

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Canal rays

Protons

Electrons

Positrons

From ₃₉Y to ₄₈Cd are called

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Transition elements

Outer transition elements

Inner transition elements

2nd transition series

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