Chemistry Questions - Sarkari Vaccancy

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Chemistry

Chemistry Test 1

1 / 10

An Artificial ecosystem is represented by ________.

1) Aquarium

2) Zoo

3) Farming

4) Pisciculture tank

2 / 10

who among the scientist invented microphone?

1) Newton

2) T.A. Edison

3) James watt

4) None of these above

3 / 10

The chemical that used to ripening of fruits is ____.

1) Nitrous Oxide

2) Calcium Carbide

3) Acidic liquid

4) None of these above

4 / 10

If PH of solution is less than 7 then it is _____.

1) Neutral

2) Acidic

3) Hyper

4) None of these above

5 / 10

What is the effect of temperature on conductivity of metals?

1) It increase

2) It decrease

3) Still remain

4) None of these above

6 / 10

Which allotropy of carbon has rigid 3D structure?

1) Gold

2) Silver

3) Diamond

4) Platinum

7 / 10

What is PH of human body ?

1) Slightly Basic

2) Slightly Acidic

3) Highly Acidic

4) None of these above

8 / 10

Which of the following metal is generally used making filament of bulb?

1) Silver

2) Tungston

3) Gold

4) Aluminum

9 / 10

Which among the following metal is trategic because it is lighter than iron?

1) Titanium

2) Platinum

3) Silver

4) Gold

10 / 10

Atomic Number is represented by which of the following symbol?

1) X

2) Y

3) Z

4) N

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Chemistry

Chemistry Test 2

1 / 10

Clear nights are colder than cloudy nights because of _______.

1) Atmosphere

2) Radiation

3) Condensation

4) None of these above

2 / 10

Which of the following is not a process of water cycle?

1) Evaporation

2) Ammonification

3) Transpiration

4) None of these above

3 / 10

Eclipses occur due to which optical phenomenon ?

1) Rectilinear Propagation

2) Reflection

3) Diffraction

4) None of these above

4 / 10

A light year is unit of ____.

1) Distance

2) Time

3) Speed

4) Power

5 / 10

Salt is obtained from sea water by which process ?

1) Transpiration

2) Evaporation

3) Sublimation

4) None of these above

6 / 10

What is deposited in iron in the process of galvanization?

1) Zinc

2) Aluminium

3) Silver

4) Copper

7 / 10

Which of the following element has lowest electronegativity ?

1) Francium

2) Tungsten

3) Steel

4) Metal

8 / 10

Which conservation principle is applicable in the case of the motion of a rocket ?

1) Conservation of velocity

2) Conservation of momentum

3) Conservation of energy

4) None of these above

9 / 10

At what PH value tooth starts to decay?

1) 2.9

2) 6.3

3) 5.5

4) 6.5

10 / 10

Bolometer is used to measure ____.

1) Temperature

2) Frequency

3) Mass

4) Velocity

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Chemistry

Chemistry Test 3

1 / 10

Which of the following is responsible for the extra strength of Pyrex glass?

1) Borax

2) Ferric Oxide

3) Potassium

4) Lead Oxide

2 / 10

Which type of fire extinguisher is used for petroleum fire?

1) Foam type

2) Solid type

3) Soda Acid type

4) Powder type

3 / 10

The residue left after extracting juice from sugar beet and sugarcane is known as _______.

1) Biomass

2) Molasses

3) Bagasse

4) whey

4 / 10

Beryllium Sulphate is less soluble in water due to ________.

1) High inflammable energy

2) Low inflammable energy

3) Iconic bond

4) None of these above

5 / 10

The natural source of hydrocarbon is ______.

1) Carbohydates

2) Biomass

3) Crude Oil

4) Coal

6 / 10

An Example of replenishment energy source is ______.

1) Coal

2) Petroleum

3) Biomass

4) Lignite

7 / 10

Find the odd one out.

1) Slaked lime

2) Chalk

3) Limestone

4) Marble

8 / 10

What is Aerosol ?

1) Green house gas present in air

2) Pollutants gas, present in air

3) Suspended solid particles in air

4) None of these above

9 / 10

Drinking Soda is _______.

1) Oxidant

2) Alkaline

3) Nuetral

4) Acidic

10 / 10

The most abundant element in the human body is ______.

1) Oxygen

2) Carbon die oxide

3) Nitrogen

4) Iron

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Chemistry

Chemistry Test 4

1 / 10

Which phosphorus is always kept under?

1) Water

2) Ether

3) Benzene

4) Kerosene

2 / 10

The heat value of combustion of Gasoline is ____.

1) 12500kj/kg

2) 12600kj/kg

3) 24000kj/kg

4) 47000kj/kg

3 / 10

Sea water contains roughly 28.0 g of NaCl per liter. What is the molarity of sodium chloride in sea water?

1) 0.450 M

2) 0.479 M

3) 0.485 M

4) 0.499 M

4 / 10

The gas that cause atmospheric pollution is _____.

1) Neon

2) Nitogen

3) Steam

4) Sulphur Dioxide

5 / 10

Which gas is produced when metal react with dilute Acids?

1) Carbon die oxide

2) Oxygen

3) Methane

4) Hydrogen

6 / 10

The Mendeleev Periodic table is classified on the basis of _______.

1) Atomic Number

2) Atomic Mass

3) Atomic Density

4) None of these above

7 / 10

At what temp. Iron can melt?

1) 1440 deg. Cel.

2) 1650 deg. Cel.

3) 1538 deg. Cel.

4) None of these above

8 / 10

A traditional Battery contain which of the following chemical?

1) Sulphuric Acid

2) Nitric Acid

3) Sodium Bicarbonate

4) None of these above

9 / 10

Galena is a mineral of ____.

1) Lead

2) Goald

3) Silver

4) Iron

10 / 10

Which of the following represent a physical change?

1) Sublimation

2) Oxidation

3) Decomposition

4) None of these above

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