Question # 1

Which compound formed when SO2 is dissolved in water

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H2SO3

SO3

H2SO

H2S2O7

Which halogen memebr exists in a liquid stte at room temperature

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Bromine

Chlorine

Fluroine

Iodine

Identify the compound whcihis not soluble in water

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KBr

MgCl2

C6H6

NaCl

Whcih is true about the equilibrium state?

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The forard reaction stops

Both forward and reverse reactions stop

Both foward and reverse reactions continue at the same rate

The reverse reaction stops

Sodium metal has electrons

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10

11

12

14

N-shell contains number of subshells.

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1

3

4

2

The branch of chemistry that helps to treat dseases and synthesize new medicines.

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Physical Chemistry

Environmental Chemistry

Organic chemistry

Inorganic chemistry

When acids react with metal with carbonates and bicarbonates which gas is produced.

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N2

H2

Cl2

CO2

Transition elements are

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All gases

All non metals

All Metals

All metalloids

Which form of carbon is used as a lubricant?

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Coal

Diamond

Charcoal

Graphite

The part of the universe that we want to focus our attention called.

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Surrounding

Energy

System

Both a and b

Chemical formula of Stearic acid.

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C₁₅H₃₁COOH

C₁₇H₃₅COOH

C₁₅H₃₇COOH

None of them

Synthesis of protein is directed by.

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DNA

RNA

Both of them

None of them

Which process is responsible for ascending of water in roots:

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evaporation

transpiration

condensation

capillary action

Which one of these pollutants are not found in car exhaust fumes?

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CO₂

O₃

NO₂

SO₂

Alkanes are also called:

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olefins

Paraffins

aliphatic compound

cyclic compounds

A reverse reaction is that.

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Which proceed from left to high

In which reactants reacts to form products

Which slow down gradually

Which speed up gradually

Normally rain water is weakly acidic because of.

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SO₃ gas.

CO₂gas.

SO₂gas.

NO₂gas.

Which one of the following disease causes severe diarrhea and can be fatal:

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Jaundic

Dysentery

Cholera

Typhoid

In which of the following groups, oxygen is attached on both sides with carbon atoms?

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Ketone

Ether

Aldehyde

Ester

Water dissolves non-ionic compound by

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Ion-ion forces

Ion-dipole forces

Dipole -dipole forces

Hydrogen bonding.

The characteristics of reversible reactions are the following except:

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Products never recombine to form reactants.

They never complete

The proced in both ways

They have a double arrow between reactants and products.

Which pair of molecule have Debye forces in them

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Ar and Ar

Argon and water

Na+ ions and water

water and water

_________ 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

Which statement is incorrect about activated complex

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Short lived

Maximum energy

Unstable combination of atoms

Less energy than Ea

Solvent extraction method is a particularly useful technique for separation when the product to be separated is.

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Non volatile or thermally unstable

Volatile or thermally stable

Non volatile or thermally stable

Volatile or thermally unstable

The heat contents of the system of known as.

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Entropy

Enthalpy

Work

Free energy

Isotopes differ in.

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Properties which depend upon mass

Arrangement of electrons in orbitals

Chemical properties

None of these

NaCI is face centered cubic structure. The Na ion at the face of the unit cell is shared by

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2-unit cells

4-unit cells

Only one unit cell

8-unit cells

If salt bridge is not used between two half cells, than the voltage.

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Decreases rapidly

Decreases slowly

Does not change

Drops of zero

NaCI and sand can be separated by one of the following without filtration

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Formation of solution and filtration

Formation of solution and evaporation without filtration

Sublimation

Chromatiograghy

The rate of reaction

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Increase as the reaction proceeds

Decreases as the reaction proceeds

Remains the same as the reactions proceeds

May decrease or increase as the reaction proceeds

Which of the following molecule obey octet rule.

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BF3

BCl3

NH2

SF6

Out of all the elements of Group V-A the highest ionization energy is possessed by

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N

P

Sb

Bi

The fiber in which monomer isCH2=CH-Cl is known as

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Saran fiber

PVC

Rayon fiber

Arcylic fiber

Peroxyacetyl nitrate (PAN) is a irritant to human beings and it affects

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Eyes

Ears

Stomach

Nose

Which compound is the most reactive one

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benzene

ethene

ethane

ethyne

Which compound shows hydrogen bonding.

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C2H6

C2H5Cl

CH3-O-CH3

C2H5OH

Which one of the following macromolecules contains carbon, hydrogen, nitrogen and oxygen in it.

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Nylon-6,6

Terylene

Starch

Bakelite

Phenol can be prepared from chlorobenzene by

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Williamson synthesis

Down's process

Kolbe reaction

Cannizzaro reaction

Catalyst used in thermal cracking

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Platinum

Nichel

Al2O3 and SiO2

Fe2O3 and CuO

Which reagent is used to reduce a carboxylic group to an alcohol

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N₂/ Ni

H₂/Pt

NaBH₄

LiAIH₄

Plastics are a pollution problem because many plastics

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Are made from petroleum

Are very inflammable

Burn to produce toxic fumes

Decompose to produce toxic products

Which of the following is a non typical transition element.

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Cr

Mn

Zn

Fe