Question # 1

___________ is used in treatment of cancer.

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Cobalt-60

C-12

H-3

Nil

The number of proton in an atom is called _________ number.

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Molecule

Formula

Atomic

Molar

Tyndall effect is shown by:

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sugar solution

paints

jelly

chalk solution

Elements are represented by chemical _________

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Abbreviation

Unit

Symbols

It can be represented

The number of electrons in K shell of O is ________________

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9

10

2

1

Metals are ________________

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Liquid

Solid

Gas

Malleable

Silver is a ____________ metal.

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Pure

Noble

None

All

The 2nd and third periods are called

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short period

Normal period

Long period

Very long period

The earth is made up of ____________ % of aluminum.

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6

7

8

9

Which one of the following element is found in most abundance in the earth's crust?

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Oxygen

Aluminum

Silicon

Iron

Which has biger particles?

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Solutions

Colloids

Suspensions

True solutions

Lactic acid founds in:

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Citrus fruits

Sour milk

Rancid Butter

Apple

Which is not a poisonous gas?

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Ozone

Chlorine

Carbon di oxide

All of them

Atmosphere has regions.

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One

Two

Three

Four

Equilibrium constant value "K" is equal to:

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Kt / Kr

Ki / Kr

Kc / Qc

Qc /Kc

Which is not a heavy metal.

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Cadmium

Lead

Zinc

Murcury

Which one of the following is polmerized to from benzene?

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ethane

ethene

methane

ethyne

The rate of reverse reaction in the beginning.

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Slow

moderate

Very fast

Low

Who put forward '' the vital force theory''?

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Kolbe

Wohler

Berzellius

Jabir - Bin - Hayan

The most important oligosaccharide is:

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Sucrose

Glucose

Fractose

Maltose

Essential components of every living all are.

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Nucleic acids

Enzymes

Lipids

Cell wall

The source of galactose.

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Fruits

Vegetables

Cereals

All of them

Most of the reaction which give stable products are

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Exothermic

Endothermic

Isothermal

None of these

Spectrum produced due to the transition of electron from M-Shall to L-Shell is.

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Absorption

Emission

Continuous

X rays

Which of the following molecules has zero dipole moment

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NH₃

CHCI₃

H₂O

BF₃

A solution has pH zero. Its H+ ions concertation will

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zero

More than unity

Less than unity

Unity only

CO+ is an example of.

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Free radical

Cationic molecular ion

Anionic molecular ion

Stable molecule

Which of the following wave properties is inversely proportional to the energy for electromagnetic radiations

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Frequency

Wave number

Velocity

Wave length

Born Haber cycle is used to determine the

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Lattice energy

Enthalpy of formation

Enthalpy of ionization

Enthalpy of dissociation

A filtration process could by very time consuming if it were into aided by a gentle suction which is developed.

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If the paper covers the funnel upto its circumference

If the paper has got small sized pores in it.

If the stem of the funnel is large so that it dips into the filtrate

If the paper fits tightly

In endothermic reactions, the heat content of the.

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Products is more than that of reactants.

Reactants is more than that of products

Both a and b

Reactants and products are equal

The value of pH and P^oHof pure water at 25° C is

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14

7

1 x 10^-14

1 x 10¹⁴

Which has greater enthalpy of vaporization

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F2

Cl2

Br2

I2

Mark the incorrect statement

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Metallic character increase down the group

Metallic character increase from left to right along a period

Metallic character decrease from left to right along a period

Metallic character remains the same down the group

In which form, glucose is stored in the liver

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Lactic acid

Maltose

Ribose

Glycogen

Acetylene reacts with ammoniacal cuprous chloride a red ppt is formed. This red ppt is of

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Copper chlorite

Coper chlorate

Cupric oxide

Copper acetylide

The IUPAC name of CH3OCH6H5 is

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Methyl phenyl ether

Methaoxy benzene

Phenoxy methane

methoxy phenyl

Which substance is used to consulate rubber latex

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Ethyl alcohol

Acetaldehyde

Acetic acid

Water

Acetaldehyde undergoes, aldol condensation in the presence of.

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dil HNO3

DIL NaOH

dil HCl

Conc. H2SO4

The most metallic elements from the following is

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Arsenic

Oxygen

Antimony

Bismuth

Bleaching powder may be produced by passing chlorine over

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calcium carbonate

hydrated calcium sulphate

calcium hydroxide

magnesium hydroxide

On heating aldehydes with Fehling's solution we get a precipitate whose colour is

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Pink

Black

Yellow

Brick red

Kerosene oil is a mixture of hydrocarbon having carbon

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11 to 13

10 to 12

11 to 12

8 to 9

Which raw material is used for manufacture eof HNO3 by Birkland eyed process

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NH3 and CO2

Air

Air and gypsum

Lime stone and urea