Question # 1

When the temperature is raised, the viscosity of the liquid decreases.This is because of

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Decreased volume of the solution

Increase in temperature increases the average kinetic energy of molecules which overcome the attractive force between them

Decreased covalent and hydrogen bond forces

Increased attraction between the moelcules

Absolute temperature is the temperature at which

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All molecular motion ceases

volume becomes zero

Mass becomes zero

None of these

pi-bond can be formed by sideways overlap of

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s-orbital

d-orbital

p-orbital

sp orbital

What is not true about DNA?

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it preserves genetic information

Synthesizes protein

it has a linear structure

To replicates

The standard reduction potential of Zinc is

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0.76V

0.34

-0.34V

-0.76V

Covalent bonds are least likely to be formed:

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between atoms of the same element

between atoms of different elements on the right of the periodic table

by head of the group elements with high ionization energies

between an element in Group I and an element in Group Vll

If the number of gas molecules are doubled in the certain volume the pressure is:

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Increased to four times

Remains unchanged

Doubeld

Decrease to half

Cotton is an example of

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animal fibre

mineral fibre

vegetable fibre

synthetic fibre

Glucose and gulose are ____ for each other

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Geometrical isomers

Metamers

Apimers

None

Three elements needed for the healthy growth of plants are

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N P K

N K C

N S P

N Ca P

The attractive forces which exist between ionic compounds and water molecules are

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dipole-dipole forces

ion diopole forces

istantaneous dipole-induced dipole forces

dipole-induced dipole forces

Steel may be manufacture by two processes which two are correct

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Open hearth process and besemer process

Open hearth process and Haber process

Bassemer process and Haber process

Contact process and Haber process

Which of the following species has unpaired electrons in ant-bonding molecular orbitals?

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O2⁺²

N2^-2

B₂

F₂

Meta directing group decreased the ----------- of benzene ring

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Physical activity

Chemical reactivity

Density

None

Which one of the following reaction rate is effected by the light

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The standard EMF of Daniel cell is 1.10 volt. The maximum electrical work obtained from the Daniel cell is

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212.3 kJ

175.4 kJ

106.15 kJ

53.07 kJ

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-110.7 KJ/mole

+110.7 KH mole^-1

676.7 KJ mole^-1

+393.7 KH mole^-1

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Plank's equations

de Broglie's equations

Heisenburg's equation

None

AgCl is soluble is

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Aqua regia

H₂SO₄

HCl

NH₃

Solvent extraction is an unstable, Process and it is called by:

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The amount of solute

Distribution law

The amount of solvent used

Law of mass action

Enzymes are

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Proteins

Minerals

Oils

Fatty acids

Catalytic oxidation of alkanes is used for the preparation of

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Adehydes

Fatty acid

Carbonyylic acids

Ketones

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