Question # 1

Which of the following pollutant result from combustion of fossil fuels.

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SO2

NOx

CO

All above

The internal resistance to flow possessed by a liquid is called its.

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Fluidity

Viscosity

Surface tension

Turbidity

Granulated sugar also known as.

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Brown sugar

Refined sugar

White sugar

None of these

Which of the following is a source of energy but does not cause pollution.

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Gaslone

Nuclear power plant

Fossil fuels

Sun

Cobalt salt imparts which colour to the borax bead

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Blue

Green

Red

Yellow

Which of the following statement is not correct regarding the stern theory of charge on colloidal particles.

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The colloidal particle has a charge distribution at its surface.

In the immediate vicinity of the colloidal particles there is an excess of counter ions

The greater the concentration and charge of ions in the diffused electrical double layer. the larger is the thickness of the layer

At large distance from the colloidal particles, the concentration of co-ions and counter ions are almost equal

Which of the following is not a polysaccharide

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Cellobiose

Cellulose

Insulin

Amylase

Buffer solution are used to.

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Increase the pH

Resist the pH

Decrease the pH

None of above

Lead pencil contain

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Lead

Lead sulphide

a mixture of lead and silica

graphite

Which of the following is not an alkali metal.

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Potassium

Francium

Sodium

Strontium

Which of the following is not correct.

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Rusting of iron can be stopped by increasing the concentration of CO2 in water

Rusting of iron is electrochemical in nature.

Rusting of iron takes place in moist air

Rusting of iron produces hydrated iron (III) oxide

Which of the following is not evoked in quantum theory?

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Schrodinger wave equation

The rigid rotor approximation

The particle in a box

Boltzmann distribution

Which one of the following noble gas is obtained by radioactive disintegrastion

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Kr

Br

Rn

Xe

Which of the following metal ion cannot be catimated by gravimetric analysis.

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K+

Ca²⁺

Al3+

Zn2+

Which of the following statements not correct with the concept of Bronsted concept of acids and bases.

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An acid can donate a proton

A base can accept a proton

This concept has many bases that have OH- ions

This concept is more general

Which one of the following statements is not true.

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Transition metals form alloys

Transition metals form complexes

Zn, Cd and Hg are transition metals

K2[PtCl6] is a well known compound but corresponding nikel compound is not knonwn

What is defined as an intimate mechanical mixture of two or more phases having a definite composition and a definite temperature of transformation within the solid state.

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Pearlite

Eutechtoid

Delta solid solution

None of these

Finely divided iron combines with CO to give.

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Fe(CO)5

Fe2(CO)9

Fe(CO)12

Fe(CO)6

The aluminium alloy used to make parts of aircrafts is.

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Magnalium

Aluminium bronze

Duralumin

All of the these

Which of the following properties does not depend upon the numeb rof solute particles.

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Elevation in B.P.

Osmotic pressure

Depression in F.P.

Boiling point of the solvent

Black and white photographic film contain small grains of.

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Silver bromide

Silver cholride

Silver iodide

Any of above

Deviation in a particular measurement is the difference between the measured value and the average value The arithmetic mean of the different deviations observed in several measurements of the same quantity is known as.

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The standard deviation

The average deviation

Relative mean deviation

variance

A colloidal system in which both the dispersion phase and dispersed phase are liquid is.

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Smoke

Emulsion

Whipped cream

Mist

Which of the following statements is not related with joule Thomson effect.

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Joule Thomson is 0 isenthalpic in nature

H2 and He show heating effect

All gases show change in temperature

The change in temperature depends on initial temperature and nature of the gas.

Joule Thomson coefficient is defined as meo= (op/oT)H

The noble gases are used due to having property

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Chomical inertness

Low boiling point

Any of a or b

Both a and b

Of the molecules, SF4, XeF4, and CF which has square planar geometry.

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SF4, XeF4 and CF4

Sf4 only

CF4 only

XeF4

Which of the following metals is the most abundant in the earth's crust.

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Mg

Ca

K

Na

Which of the following solution has highest normality.

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1 N H2PO4

0.5 N H2SO4

6 g NaOH per 100 cm3

4 g NaOH PER 1000 cm3

The inert gases Ar, Kr and Ke form compounds with water at low temperature and high pressure. These compounds are called.

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Halides

Hydrates

Clathrates

All of above

The particles of about 1 nm need _______ activation energy to enter either aggregation processes or reactions to give to new chemicals.

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Higher

Lesser

N o

All above

Which of the following disposal method is used for agriculture wastes.

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Dump

Landfill

Incineration

Open burning

All above

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