Question # 1

The partial pressure of oxygen in lungs is

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760 torr

320 torr

159 torr

116 torr

The unit of mole fraction is

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Moles dm^-3

Moles kg^-1

Gram dm^-3

None

Oxidation number of carbon in NaHCO₃

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+4

-6

+6

+2

Which one of the following substances is used as decolouring agent

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Animal charcol

Concentrated H₂SO₄

CaCI₂

Silica gel

18 g glucose is dissolved in 90 g of water. The relative lowering of vapour pressure is equal to.

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1/5

5.1

1/51

6

Alkali and alkaline earth metal are usually obtained by

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Decomposition of their carbonates

By heating their hydroxide

electrolysis of molten metal oxides

Electrolysis of molten metal halides

Large value of distribution coefficient K means.

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Component of solute dissolved large in mobile phase

Components of solute do not dissolve in mobile phase

Components of solute remains at original spot

All statements are correct

The change in heat energy of a chemical reaction at constant temperature and pressure is called.

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Enthalpy change

Bond energy

Heat of sublimation

Internal energy change

Which particle have greater wave nature.

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Electron

Proton

Neutron

a particles

At equilibrium stage of chemical reaction

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The concentration of reaction is equal to concentration of products

The rate constant of forward reaction is equal to rate constant of backward reaction

The rate of forward reaction is equal rate of backward reaction

The energy of activation of forward step is equal to energy of activation of backward step

Which is not example of natural plasma.

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Lightening bolt

Aurora

Neon sign

Sum

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

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O₂⁺²

N₂^-2

B₂

F₂

Molarity of pure water is

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1

18

55.5

6

Isotopes are the atoms of same element with similar chemical properties but different

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Atomic number

Atomic volume

Atomic weight

Atomic structure

Haemoglobin is a Macro molecule and consists of approximately atoms.

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5000

10,000

68000

15000

Which pair of mixture is called ideal solution.

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Chlorobenzene and bromobenzene

Water alcohol

Water ether

HCl and water

The cell in which a non spontaneous redox reaction takes place as a result of electricity is known as.

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Voltaic cell

Denial cell

dry Cell

Electrolytic cell

When aqueous NaCl is electrolyzed, which of the following ions gas discharged at anode.

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Cl-

OH-

Na+

H+

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