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General Knowledge(GK) (or) General Awareness

Welcome to the General Knowledge Section of Free Time Learning. As we are aware General Knowledge (GK) is a very important area in all the competitive exams held in the country. Nowadays, a good knowledge of general awareness is very important in clearing any competitive and government recruitment examinations.

These General Knowledge Question are very important and usefull to UPSC, IAS/PCS, UPPSC, IBPS, SBI, RBI, SSC, CGL, Railway, APPSC, TSPSC, KPSC, TNPSC, TPSC, UPPSC, MPSC, RPSC, BPSC, MPPSC, UKPSC, MPSC, and other competitive exams.

1 .
The energy content of food is generally measured in
A)
Kilojoules
B)
Coulombs
C)
Ergs
D)
Calories

Correct Answer :   Calories

Energy is measured in units of kilocalories (kcal) or kilojoules (kJ). One kilocalorie (1 kcal) is equal to 4.18 kilojoules (4.18 kJ). The amount of energy a food contains per gram is known as its energy density so we can describe fat as more energy dense than protein or carbohydrate.

Published On : June 8, 2021
2 .
What is the chemical name of quick lime
A)
Calcium hydroxide
B)
Calcium bicarbonate
C)
Calcium oxide
D)
Calcium carbonate

Correct Answer :   Calcium oxide

Published On : June 8, 2021
3 .
Which one of the following is not a Green House gas
A)
Ar
B)
COâ‚‚
C)
Nâ‚‚O
D)
CHâ‚„

Correct Answer :   Ar

The various greenhouse gases are carbon dioxide, methane, chlorofluorocarbon, ozone, nitrous oxide, and water vapor.

Published On : June 8, 2021
4 .
Chemically, dry ice is
A)
solid sulphur dioxide
B)
solid carbon dioxide
C)
ice formed from pure distilled water
D)
ice kept at sub-zero temperatures

Correct Answer :   solid carbon dioxide

Dry ice, carbon dioxide in its solid form, a dense, snowlike substance that sublimes (passes directly into the vapour without melting) at −78.5 °C (−109.3 °F), used as a refrigerant, especially during shipping of perishable products such as meats or ice cream.

Published On : June 8, 2021
5 .
The average life span of Red Blood Cell is
A)
3-4 days
B)
12 days
C)
120 days
D)
Never die

Correct Answer :   120 days

Published On : June 8, 2021
6 .
Which one is the closet Satellite to the parent planet in our solar system
A)
Hyperion
B)
Moon
C)
Charon
D)
Phobos

Correct Answer :   Phobos

Published On : June 8, 2021
7 .
Bleaching powder is also chemically known as
A)
Sodium hydroxide
B)
Calcium sulphate
C)
Calcium hypochlorite
D)
Calcium Carbonate

Correct Answer :   Calcium hypochlorite

Calcium hypochlorite is an inorganic compound with formula Ca(OCl)â‚‚. It is the main active ingredient of commercial products called bleaching powder, chlorine powder, or chlorinated lime, used for water treatment and as a bleaching agent.

Published On : June 8, 2021
8 .
The blue colour of the clear sky is due to __________ of light
A)
Diffraction
B)
Refraction
C)
Dispersion
D)
Reflection

Correct Answer :   Dispersion

Published On : June 8, 2021
9 .
June 21 marks the winter solstice in the _________ Hemisphere.
A)
Southern
B)
Northern
C)
Eastern
D)
Western

Correct Answer :   Southern

Published On : June 8, 2021
10 .
The lowest layer of atmosphere is called _______.
A)
Exosphere
B)
Troposphere
C)
Genosphere
D)
Stratosphere

Correct Answer :   Troposphere

Troposphere : This is the lowest part of the atmosphere - the part we live in. It contains most of our weather - clouds, rain, snow. In this part of the atmosphere the temperature gets colder as the distance above the earth increases, by about 6.5°C per kilometre. The actual change of temperature with height varies from day to day, depending on the weather.
 
The troposphere contains about 75% of all of the air in the atmosphere, and almost all of the water vapour (which forms clouds and rain). The decrease in temperature with height is a result of the decreasing pressure. If a parcel of air moves upwards it expands (because of the lower pressure). When air expands it cools. So air higher up is cooler than air lower down.
 
The lowest part of the troposphere is called the boundary layer.  This is where the air motion is determined by the properties of the Earth's surface.  Turbulence is generated as the wind blows over the Earth's surface, and by thermals rising from the land as it is heated by the sun.  This turbulence redistributes heat and moisture within the boundary layer, as well as pollutants and other constituents of the atmosphere. 
 
The top of the troposphere is called the tropopause. This is lowest at the poles, where it is about 7 - 10 km above the Earth's surface. It is highest (about 17 - 18 km) near the equator.

Published On : June 8, 2021