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SSC CGL Previous Year Questions: General Science - 18 - SSC CGL MCQ


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30 Questions MCQ Test SSC CGL Previous Year Papers - SSC CGL Previous Year Questions: General Science - 18

SSC CGL Previous Year Questions: General Science - 18 for SSC CGL 2024 is part of SSC CGL Previous Year Papers preparation. The SSC CGL Previous Year Questions: General Science - 18 questions and answers have been prepared according to the SSC CGL exam syllabus.The SSC CGL Previous Year Questions: General Science - 18 MCQs are made for SSC CGL 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for SSC CGL Previous Year Questions: General Science - 18 below.
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SSC CGL Previous Year Questions: General Science - 18 - Question 1

Which one among the following is a solid lubricant ?        (SSC CHSL 2012)

Detailed Solution for SSC CGL Previous Year Questions: General Science - 18 - Question 1

Graphite is one of the solid lubricants used for reducing the friction.These solid lubricants are used between two sliding surfaces.

SSC CGL Previous Year Questions: General Science - 18 - Question 2

Longest cell in human body is:        (SSC CHSL 2012)

Detailed Solution for SSC CGL Previous Year Questions: General Science - 18 - Question 2

Nerve cell is the longest cell in the human body

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SSC CGL Previous Year Questions: General Science - 18 - Question 3

The acid rain destroys the vegetation because it contains:        (SSC CHSL 2012)

Detailed Solution for SSC CGL Previous Year Questions: General Science - 18 - Question 3

The acid rain contains acidic components, such as sulfuric and nitric acid. Due to acidity present in the rain it is harmful not only to vegetation but other nonliving structures as well. 

SSC CGL Previous Year Questions: General Science - 18 - Question 4

Activated sludge treatment is called:        (SSC CHSL 2012)

Detailed Solution for SSC CGL Previous Year Questions: General Science - 18 - Question 4

In activated sludge process, wastewater with organic matter is aerated in an aeration basin in which microorganisms metabolize the suspended and soluble organic matter. This is an important stage of the treatment of the sewage water.

SSC CGL Previous Year Questions: General Science - 18 - Question 5

Caustic soda is :        (SSC CHSL 2012)

Detailed Solution for SSC CGL Previous Year Questions: General Science - 18 - Question 5

Caustic soda or sodium hydroxide is an important chemical compound used in various industrial as well as domestic uses. It is a white deliquescent solid - that is tendency to absorb moisture from the air.

SSC CGL Previous Year Questions: General Science - 18 - Question 6

Red light is used in traffic signal for stopping the traffic because:        (SSC CHSL 2012)

Detailed Solution for SSC CGL Previous Year Questions: General Science - 18 - Question 6

Red light scatters much less than lights of other color due to its greater wavelength.

SSC CGL Previous Year Questions: General Science - 18 - Question 7

The red colour of ripe tomatoes is due to the presence of        (SSC Sub. Ins. 2012)

Detailed Solution for SSC CGL Previous Year Questions: General Science - 18 - Question 7

The deep red colour that is present in tomatoes, pink grapefruit, guava and watermelon is caused by lycopene, a carotenoid.

SSC CGL Previous Year Questions: General Science - 18 - Question 8

Anticoagulants are not present in        (SSC Sub. Ins. 2012)

Detailed Solution for SSC CGL Previous Year Questions: General Science - 18 - Question 8

Anticoagulants are not present in wasp as it is not a blood sucking insect and hence do not need it.

SSC CGL Previous Year Questions: General Science - 18 - Question 9

Vegetation is effective in absorbing        (SSC Sub. Ins. 2012)

Detailed Solution for SSC CGL Previous Year Questions: General Science - 18 - Question 9

Vegetations like tree and other shrubs and plants are effective in absorbing various pollutant gases like nitrogen dioxide, ozone etc. These also absorb particulate matter through their leaves and needles and thereby help to improve air quality.

SSC CGL Previous Year Questions: General Science - 18 - Question 10

When a person cries, there is a watery discharge from the nose due to activation of        (SSC Sub. Ins. 2012)

Detailed Solution for SSC CGL Previous Year Questions: General Science - 18 - Question 10

When a person cries there is a watery discharge from the nose due to activation of lachrymal fluid through nasal cavity

SSC CGL Previous Year Questions: General Science - 18 - Question 11

The fundamental role of root hairs in plants is        (SSC Sub. Ins. 2012)

Detailed Solution for SSC CGL Previous Year Questions: General Science - 18 - Question 11

(c) The functions of root hairs is to absorb water and mineral nutrients present in the soil and take this solution up through the roots to the rest of the plant. Root hair cells do not carry out photosynthesis as they do not contain chloroplasts.

SSC CGL Previous Year Questions: General Science - 18 - Question 12

Catch crops are        (SSC Sub. Ins. 2012)

Detailed Solution for SSC CGL Previous Year Questions: General Science - 18 - Question 12

In agriculture, a catch crop is a fast-growing crop that is grown simultaneously with, or between successive plantings of a main crop.

SSC CGL Previous Year Questions: General Science - 18 - Question 13

The pigment that protects plants form UV damage is        (SSC Sub. Ins. 2012)

Detailed Solution for SSC CGL Previous Year Questions: General Science - 18 - Question 13

Carotenoids protect the plant from damage from UV light and this protection is attributed to their antioxidant properties: they are able to absorb the harmful oxidative chemicals produced during photosynthesis, the process whereby plants make energy from sunlight.

SSC CGL Previous Year Questions: General Science - 18 - Question 14

A bioenergy source obtained by fermentation to supplement fossil fuel petrol is        (SSC Sub. Ins. 2012)

Detailed Solution for SSC CGL Previous Year Questions: General Science - 18 - Question 14

Ethanol is obtained from the agricultural feedstocks through the process of fermentation. It is a renewable source of energy and blended with petrol in different proportions.

SSC CGL Previous Year Questions: General Science - 18 - Question 15

The substance that causes the worst air pollution is        (SSC Sub. Ins. 2012)

Detailed Solution for SSC CGL Previous Year Questions: General Science - 18 - Question 15

The substance that causes the worst air pollution is carbon monoxide (CO). Carbon monoxide combines with hemoglobin of blood to form carbaminohemoglobin which fails to carry oxygen to body tissues, causing oxygen starvation.

SSC CGL Previous Year Questions: General Science - 18 - Question 16

A liquid is said to boil when its        (SSC Sub. Ins. 2012)

Detailed Solution for SSC CGL Previous Year Questions: General Science - 18 - Question 16

Boiling occurs only when the vapor pressure of the liquid is equal to the surrounding atmospheric pressure.

SSC CGL Previous Year Questions: General Science - 18 - Question 17

Which is not correct regarding covalent compounds?        (SSC Sub. Ins. 2012)

Detailed Solution for SSC CGL Previous Year Questions: General Science - 18 - Question 17

Covalent compounds have low melting and boiling points and not undergo very fast reactions.

SSC CGL Previous Year Questions: General Science - 18 - Question 18

Choose the correct statement        (SSC Sub. Ins. 2012)

Detailed Solution for SSC CGL Previous Year Questions: General Science - 18 - Question 18

The properties of a mixture are same as that of their components.

SSC CGL Previous Year Questions: General Science - 18 - Question 19

PVC is obtained by the polymerisation of        (SSC Sub. Ins. 2012)

Detailed Solution for SSC CGL Previous Year Questions: General Science - 18 - Question 19

Several units of Vinyl Chloride polymerized to form Poly Vinyl Chloride (PVC).

SSC CGL Previous Year Questions: General Science - 18 - Question 20

To eliminate the glare of headlights in motor cars,        (SSC Sub. Ins. 2012)

Detailed Solution for SSC CGL Previous Year Questions: General Science - 18 - Question 20

Polarized are used to eliminate the glares produced by different light sources. The polaroid glasses significantly attenuate the source of the glare that is the horizontally polarized light and helps in better visibility and contrast. 

SSC CGL Previous Year Questions: General Science - 18 - Question 21

The substances which have infinite electrical resistance are called        (SSC Sub. Ins. 2012)

Detailed Solution for SSC CGL Previous Year Questions: General Science - 18 - Question 21

Insulators are substances which do not permit the electricity to pass through it due to very high electrical resistance.

SSC CGL Previous Year Questions: General Science - 18 - Question 22

Stainless steel is an alloy of        (SSC Sub. Ins. 2012)

Detailed Solution for SSC CGL Previous Year Questions: General Science - 18 - Question 22

Chromium, nickel are the major components of stainless steel along with iron. 

SSC CGL Previous Year Questions: General Science - 18 - Question 23

Enriched uranium used in a nuclear reactor is        (SSC Sub. Ins. 2012)

Detailed Solution for SSC CGL Previous Year Questions: General Science - 18 - Question 23

Uranium obtained from mining contains several isotopes of uranium in different compositions, such as U-234, U-235, and U-238. Through Enrichment of uranium the percentage of fissile uranium (U-235) is increased. 

SSC CGL Previous Year Questions: General Science - 18 - Question 24

In a refrigerator, cooling is produced by        (SSC Sub. Ins. 2012)

Detailed Solution for SSC CGL Previous Year Questions: General Science - 18 - Question 24

A refrigerator works on with the help of five basic components: a fluid refrigerant; a compressor, a condenser coil, an evaporator coil and an expansion device. The compressor constricts the refrigerant vapour, raising its pressure, and pushes it into the coils on the outside of the refrigerator. When the hot gas in the coils meets the cooler air temperature of the surroundings, it turns into liquid. In the liquid form at high pressure, the refrigerant cools down as it flows into the coils inside the freezer and the fridge. The refrigerant absorbs the heat inside the fridge, cooling down the air. Lastly, the refrigerant evaporates and then flows back to the compressor, where the cycle repeats itself.

SSC CGL Previous Year Questions: General Science - 18 - Question 25

Saliva helps in the digestion of        (SSC CGL 1st Sit. 2011)

Detailed Solution for SSC CGL Previous Year Questions: General Science - 18 - Question 25

Salivary gland contains an enzyme called ptyalin which breaks down starch into simpler sugars such as maltose and dextrin that can be further broken down in the small intestine.

SSC CGL Previous Year Questions: General Science - 18 - Question 26

The longest bone in the human body is        (SSC CGL 1st Sit. 2011)

Detailed Solution for SSC CGL Previous Year Questions: General Science - 18 - Question 26

The femur is the proximal bone of the hindlimb in tetrapod vertebrates. the femur serves an important weight-bearing function and is an essential component of the lower kinetic chain. The robust shape of the femur provides many sturdy attachment points for the powerful muscles of the hip and knee that contribute to walking and other propulsive movements.

SSC CGL Previous Year Questions: General Science - 18 - Question 27

The time period of a pendulum when taken to the Moon would        (SSC CGL 1st Sit. 2011)

Detailed Solution for SSC CGL Previous Year Questions: General Science - 18 - Question 27

The time period of a pendulum is inversely proportional to gravity. The gravity of the Moon is six times less than that of the Earth, hence the time period of a pendulum on the Moon is more than that on the Earth.

SSC CGL Previous Year Questions: General Science - 18 - Question 28

The function of ball bearings in a wheel is        (SSC CGL 1st Sit. 2011)

Detailed Solution for SSC CGL Previous Year Questions: General Science - 18 - Question 28

The function of ball bearings in a wheel is to convert kinetic friction into rolling friction.

SSC CGL Previous Year Questions: General Science - 18 - Question 29

'Shock–absorbers' are usually made of steel as it        (SSC CGL 1st Sit. 2011)

Detailed Solution for SSC CGL Previous Year Questions: General Science - 18 - Question 29

shock absorbers are hydraulic (oil) pump like devices that help to control the impact and rebound movement of your vehicle’s springs and suspension. Along with smoothening out bumps and vibrations, the key role of the shock absorber is to ensure that the vehicle’s tyres remain in contact with the road surface at all times.

SSC CGL Previous Year Questions: General Science - 18 - Question 30

Which of the following could be used as fuel in propellant of rockets?        (SSC CGL 1st Sit. 2011)

Detailed Solution for SSC CGL Previous Year Questions: General Science - 18 - Question 30

Propellant is the chemical mixture burned to produce thrust in rockets and consists of a fuel and an oxidizer. An oxidizer is an agent that releases oxygen for combination with a fuel. In combination with an oxidizer such as liquid oxygen, liquid hydrogen yields the highest specific impulse, or efficiency in relation to the amount of propellant consumed, of any known rocket propellant.

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