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Physical and Chemical Principles > General Chemistry (Part 4) > Flashcards

General Chemistry (Part 4) Flashcards

1
Q

The chemical name of Common salt is:

A

sodium chloride

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2
Q

Denatured spirit is ethanol mixed with:

A

pyridine

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3
Q

The most abundant inert gas in the atmosphere is:

A

argon

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4
Q

Which metal is extracted from seawater?

A

magnesium

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5
Q

Percentage of lead in lead pencils is:

A

0

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6
Q

Water is not effective in extinguishing a fire caused by petrol because:

A

Water and petrol are immiscible with each other and petrol which forms the upper layer continues to burn.

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7
Q

Helium gas is used in gas balloons instead of hydrogen gas because it is:

A

noncombustible

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8
Q

The gas used in the artificial ripening of fruits is:

A

acetylene

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9
Q

Ruby and sapphire are oxides of:

A

aluminum

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10
Q

The gas which turns into liquid at the lowest temperature among the following is:

A

hydrogen

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11
Q

Gunpowder consists of a mixture of:

A

nitrite sulfur and charcoal

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12
Q

In nuclear reactors graphite is used as a an:

A

moderator

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13
Q

Sea water can be purified by the process of:

A

distillation

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14
Q

Detergents clean surfaces on the principle of:

A

surface tension

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15
Q

The compound to which H2 does not add is:

A

tetraphenyl ethylene

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16
Q

Ammonia is a mixture of

A

aluminum powder and ammonium nitrate

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17
Q

Which gas does not form the part of atmosphere?

Nitrogen| Helium | Chlorine | None of these

A

chlorine

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18
Q

The fuel used in an atomic reactor is:

A

uranium

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19
Q

White coal is:

A

hydroelectricity

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20
Q

The major constituent of Gobar gas is:

A

methane

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21
Q

The residue left after extracting juice from sugar beet and sugarcane is called:

A

bagasse

22
Q

The isotope of Uranium used in atomic reactors is:

A

U-235

23
Q

The greenhouse effect is caused by the higher level of which gas in the atmosphere?

A

CO2

24
Q

Candle is a mixture of:

A

paraffin wax and stearic acid

25
Q

Ethanol containing 5% water is known as:

A

rectified spirit

26
Q

The important ore of aluminum is:

A

bauxite

27
Q

Aqua regia is a 1:3 mixture by volume of:

A

concentrated nitric acid and concentrated hydrochloric acid

28
Q

What is the maximum water vapor content in the atmosphere?

A

3 to 4 %

29
Q

The amount of chlorine available in water after disinfection is called as:

A

residual chlorine

30
Q

What are the major pollutants of cigarette smoke?

A

carbon monoxide and nicotine

31
Q

Nuclear energy is a mineral based energy source. It is derived from:

A

uranium

32
Q

Zinc sulfide is commonly used as:

A

rodenticide

33
Q

The purest form of water is:

A

rainwater

34
Q

The main constituent of biogas is:

A

methane

35
Q

Aspirin is chemically known as:

A

acetylsalicylic acid

36
Q

The most abundant element in the human body is:

A

oxygen

37
Q

Which of the following is not a greenhouse gas?

Hydrogen | Carbon dioxide | Nitric acid | Chlorofluorocarbon

A

hydrogen

38
Q

Litmus is obtained from:

A

lichen

38
Q

Wax used for making candle is chemically a mixture of:

A

aliphatic hydrocarbons

39
Q

Vinegar made by fermentation from cane sugar contains:

A

acetic acid

40
Q

Photo oxidation process is initiated by:

A

light

41
Q

Ultraviolet radiation striking this earth is due to the depletion of:

A

ozone

42
Q

Major gaseous pollutant of the thermal power station is:

A

SO2

43
Q

The process of removing calcium and magnesium from hard water is known as:

A

water softening

44
Q

The tip of the matchstick contains:

A

red phosphorus

45
Q

Commercially sodium bicarbonate is known as:

A

baking soda

46
Q

An emulsifier is an agent which:

A

stabilizes the emulsion

47
Q

Mortar is a mixture of water sand and:

A

slaked lime

48
Q

Which of the following substance is highly plastic?

A

clay

49
Q

The National Chemical Laboratory (India) is located in:

A

Pune

Physical and Chemical Principles (6 decks)

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