Question # 1

The percentage of SO₂ produced by volcanoes is:

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47%

57%

67%

77%

A real gas obeying Vander Waal's equation will resemble ideal gas if

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Both a and b are large

Both a and b are small

a is small and b is large

a is large and b is small

Which af the following compound reacts slower than benzene in the electrophilic substitution.

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Phenol

Nitrobenzene

Toluene

Aniline

Plasma proteins are separated by

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Dialysis

Electrophoresis

Filtration

Alcohol precipitation

Lonic solids are characterized by:

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low melting points

_{good conductivety in solid state}

high vapour pressures

solubility in polar solvents

One kilo calorie is equal to

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4.184J

1000J

4184J

1kJ

Among solids,the highet melting point is exhibited by

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Covalent solids

Ionic solids

Pseudo solids

Molecular solids

The enthalpy of formation of a compound is

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Positive

Either positive or negative

Negative

None

Ozone is effectively removed by

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TNT

CFCs

PVC

CNG

Which is the chemical formula of calcium super phosphate:

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CaH₂PO₄

CaHPO₄

Ca(H₂PO₄)₂

none of above

Acetone reacts with HCN to form a cyanohydrin. It is an example of

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Nucleophilic addition

Electrophilic substitution

Electrophilic addition

Nucleophilic substitution

Relative atomic mass of an element is the mass of the element relative to

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1/12 mass of carbon-12

1/12 mass of carbon

1 mass of hydrogen atom

1/16 mass of oxygen

In the periodic table, the element with atomic number 16 will be placed in the group

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Fourteen

Sixteen

Thirteen

Fifteen

Which of the following is used as anesthetics

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Alcohol

Diethylether

Phenol

Dimethyl ether

How many cm³of 1 M H₂SO₄required to neutralize 10 cm³of 1 M NaOH

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2 cm³

2.5 cm³

5 cm³

10 cm³

Splitting of spectral lines of the hydrogen atom under the influence or magnetic field is called

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Stark effect

Zeeman effect

Compton effect

Photoelectric effect

If the value of principal quantum number is 3. the total possible values for magnetic quantum number will be

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1

4

9

12

Which one of the following is the most abundant organic substance found in nature

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Fructose

Starch

Glucose

Cellulose

Alcohol can be denaturated by adding:

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Acetone

Methanol

Pyridine

All

The process of osmosis was first discovered by

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Nollet

Pfeffer

Traube

Dutrochet

The de-Brogile wavelength of a particle with mass 1g and velocity 100 m/s is

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6.63 x 10^-33m

6.63 x 10^-34m

6.63 x 10^-35m

6.65 x 10^-35m

In the rate equation when the concentration of reactants are unity, then rate is equal to

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Instantaneous rate

Average rate

Active mass of products

Specific rate constant

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