Question # 1

Which one of the following will not react with dilute HCI?

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Sodium

Potassium

Calcium

Carbon

There are _________ types of bonds.

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1

2

3

4

The quantity of a matter in a body is called ____________

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Mass

Weight

Atom

Molecule

D-block consists of:

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4th,5th & 6th periods

2nd, 3rd & 4th periods

1st, 2nd, & 3rd periods

..................... is property of metals.

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Gases

Lustrous

Solids

Nil

Bucky balls was discovered in ________________

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1965

1975

1985

1995

Transition elements are:

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all gases

all metals

all non-metals

all metalloids

Concentration is ratio of:

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solvent to solute

solute to solution

solvent to solution

both a and b

Which one is largest?

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Exo

Peta

Atto

Pico

Metals from a ____________ part of earth on which we live.

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Smaller

Larger

Medium

Nil

Pure alkali metals can be cut simply by knife but iron cannot because of alkali metals have:

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Strong metallic bonding.

Weak metallic bonding

Non- metallic bonding

Moderate metallic bonding

One H₂O molecule can form hydrogen bonding with how many other H₂O molecules?

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One

Two

Three

Four

Uric acid is found in

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Urine

Fats

Apple

Grapes

Swimming pools are cleaned by a process:

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Hydrogenation

Bromination

Chlorination

Nitration

A substance which can behave as an acid as well as a base is called.

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Acid

Base

Amphoteric

Neutral

Who put forward the vital force theory?

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Berzelius

Wohler

Dalton

Lavoisier

Out of twenty how many amino acids can by synthesized by human body?

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Five

Ten

Seven

Twelve

Lewis acid-base concept have the following characteristics except:

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formation of an adduct

Formation of a co-ordinate covalent bound

Donation and acceptance of an electron pair

Donation and acceptance of a proton

Which of the following is reducing sugar.

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Glucose

Fructose

Sucrose

Starch

Which is not a part of flue gas?

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Furans

Dioxins

HCl

H₂SO₄

Monosaccharide consists of number of carbon atoms.

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2 to 4

4 to 8

3 to 9

5 to 10

pH value normally varies from.

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0-14

1-14

7-14

10-14

Cell potential depends upon

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Temperature

Concentration of ions

Nature of electrolyte

All of above

The net heat change in a chemical reaction is same whether it is brought about in two or more different ways in one or several steps. It is knnown as

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Henry's law

Hess's law

Joule's principle

Law of combustion

The net heat change in a chemical reaction is same whether it is brought about in two or more different ways in one or several steps. It is known as

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Henry's law

Hess's law

Joule's principle

Law of conservation of energy

One of the following liquids has lowest vapour pressure at 32°C. Indicate that liquid

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Ether

Chloroform

Ethanol

Water

Which solution is an example of solid in gas

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Fog

Steel

smoke

Air

The rate of reaction determined at any given time is called.

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Average rate

Instantaneous rate

Spontaneous rate

Over all rate

If the volumes of reactants and products are same in a gaseous phase reaction, then the equilibrium state is not affected by

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Change of temperature

Change of pressure

Change of concentration

Catalyst

Which element has highest ionization potential.

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Li

B

Be

C

VSEPR theory was proposed by

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Nyholn and Gillespie

Kossel

Lewis

Sidwick

Which of the following particles would on losing an electron has its outermost p-orbital as half filled

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Nitrogen atom

O⁺ion

P^-1ion

S⁺¹ion

_________ was derived by C.M Guldberg and P Waage in 1864

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Law of conservation of Mass

Law of mass action

Law of conservation of energy

Distribution law

The oxidation of NO in air produces

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N₂O₃

NO₂

N₂O₃

N₂O₄

Which catalyst is used in contact process.

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Fe2O3

V2O5

SO3

Ag2O

Ecosystem is smaller unit of

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Lithosphere

Hydroshpere

Amosphere

Biosphere

Boric acid is used as eye wash due to its

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Weakly acidic property

Antiseptic nature

Antibiotic nature

Weakly basic properties

In which block of periodic table non metals are present.

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s

p

d

f

Which acid is used in the manufacture of synthetic fibre

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Formic acid

Oxalic acid

Carbonic acid

Acetic acid

Which one of the following species is not an electrophile.

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HN3

Br

H+

BF3

Cyclic structure of benzene was proposed by

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Dewar

Faraday

Down

Kekule

Which one of the following oxide is brown in colour.

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NO

NO2

N2O

N2O3

The Plastic which become soft and melt on heating and can be molded and remolded are called.

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Thermoplastic

Thermosetting plastic

Resin

Melamine

The conversion of potassium magnate to potassium permanganate by passing Cl2 Through aqueous solution of K2MnO4 is called.

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Contact process

Open hearth process

Stadeler's process

Thermite process