Question # 1

Codon for amino acid glycinc is not represented by base pair

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GCA

GGC

GGA

GGU

Which of the following statements is not relevant to the Plank's quantum Theory.

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Radiant energy is not absorbed or emitted continuously

Radiant energy is emitted or absorbed in the form of small packets of energy.

The quantum oflight energy is called photon

The energy associated with photon of radiation is directly proportional to the wavelength.

Of all the noble gaes, easily available gases are

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He & Ar

He & Ne

Ne & Ar

Xe & Kr

Which of the following elements forms maximum number of compounds.

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Carbon

Silicon

Hydrogen

Fluorine

Compounds consisting of two or more interlocked rings are called.

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Inclusion compounds

Cage compounds

Catenanes

Crown other

Which of the following is an alloy of copper

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Brass

Bronze

Monel metal

All

A red color gas, on condensing ti gives a dark blue liquid.

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NO

N2O

N2O3

N2O4

When a lead a storage battery is discharged .

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SO2 is evolved

PbS is consumed

Pb is formed

H2SO4 is consumed

The presence of which of the following in drinking water is responsible for mottling of teach.

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Mercury

Iodine

Chlorine

Flourine

The alternate feasible fuel for existence of mankind to

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Uranium

Wood

Bontonite

Cloth residues

Relative order of acidity of oxy acid

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HCIO > HCIO2 > HCIO3 > HCIO4

HCIO4 > HCIO3 >HCIO2 > HCIO

HCIO3 > HCIO2 > HCIO > HCIO4

HCIO2 > HCIO4 > HCIO3 > HCIO

Ground water is threatened with pollution from which of the following source.

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Domestic wastes

Industrial wastes

Agricultural wastes

All above

Which of the following property is not related to aluminum.

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it is silvery white metal with brilliant lusture

It is a very light metal with specific gravity as 2.7

It is good conductor of heat

It is the least reactive element of III Group.

The action of all the relations of all the organism to their environment is called

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Biology

Botany

Ecology

Archiology

The formula of bleaching powder is.

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Ca OCl2

CaCIO3

Ca(CIO)3)2

CaOCI

Which among the following hydride is ionic in nature.

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Ammonia

Protium oxide

Calcium hydride

Sulphane

The wire of flash bulb is made up of.

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Cu

Ag

Mg

Ba

Un-like s -block elements d-block elements form which compounds as well

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ionic compounds

Co valent compound

Co ordinate compounds

None of above

Which of the following statements correct regarding copper.

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It is used in electroplating

Its salts are used as insecticides

Its salts are used as coloring materials

All are correct

The smallest cluster of carbon atoms in Bucky balls known till today consists of ___________ carbon atoms.

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75

20

60

15

In which polymerization branching of chain cannot be possible.

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Free radical

Cationic

Anionic

Anionic and Zieglar Natta

Phenol on reaction with ethanoic anhydrides in the presence of sodium ethanoate gives.

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Phenyl benzoate

Ethyl benzoate

Phenyl ethanoate

Phenyl methyl ether

Potassium crystallizes in a body centered lattice. Hence, the coordination number of potassium in potassium metal is.

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4

6

8

12

Which of the following techniques involve gas as the mobile phase.

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HPLC

GLC

TLC

Paper chromatography

Inert pair effect is best shown by

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Si

Z

Sn

Pb

Which of the following statement represent disadvantages of sanitary landfill

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Public opposition

Uneconomical

Health hazard

All above

Transition elements, in general exhibit the following properties, except one Name that property.

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Variable oxidation state

Natural radioactivity

Tendency to form complexes

Formation of alloys

Used in TV sets and sound movies to give ready response to electrical potential

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He

Ne

Ar

Kr

Hemimorphite is an example of.

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Orthosilicate

Pyrosilicate

Cyclic silicate

Meta silicate

The process of removing disolved impurities from a colloidal system, by means of diffusion through a suitable membrane under the influence of an electric field , is called.

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Electrosmosis

Electrodialysis

Electrophoresis

Peptization

Which of the following salt is not used in salt bridge to minimize liquids junction potential.

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KCl

NH4Cl

KNO3

CaCl2

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