Static GK for Judiciary – 19

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Q.1. Kilowatt-hour is the unit ____________?

(a) energy

(b) power

(c) force

(d) momentum

 

Correct Answer: A

Explanation- Kilowatt-hours, abbreviated as KWh, is a unit of energy representing one thousand watt-hours. Kilowatt-hours are often used as a measure of domestic energy consumption. A kilowatt-hour is equivalent to a steady power of one kilowatt running for one hour and is equivalent to 3.6 million joules or 3.6 megajoules. Hence Option A is correct.

 

Q.2. The power of lens is measured in___________?

(a) watt

(b) lumen

(c) dioptre

(d) candela

 

Correct Answer: C

Explanation- The power of the lens is measured in dioptre(D). Power of lens = 1/focal length The power of a lens is its ability to bend light. The greater the power the greater the refraction of light. Hence Option C is correct.

 

Q.3. The world-famous rock-art site in India is situated at________?

(a) Adamgarh

(b) Gupteshwar

(c) Bhimbetka

(d) KabraPahar

 

Correct Answer: C

Explanation- The Bhimbetka rock shelters are an archaeological site in central India that spans the Paleolithic and Mesolithic periods, as well as the historic period. It exhibits the earliest traces of human life in India and evidence of the Stone Age starting at the site in Acheulian times. It is located south of Bhopal in the Vidhyan ranges of Madhya Pradesh with rock shelters having more than 500 rock paintings. It was declared a UNESCO World Heritage Site in 2003. Hence Option C is correct.

 

Q.4. In a nuclear reactor, which one of the following is used as a fuel?

(a) Coal

(b) Uranium

(c) Radium

(d) Diesel

 

Correct Answer: B

Explanation- The fuel that is used in a nuclear reactor to maintain a nuclear concatenation response is known as nuclear fuel. These fuels are fissionable, and the most popular nuclear combustibles are radioactive elements such as uranium-235 and plutonium-239. Hence Option B is correct.

 

Q.5. In binary code, the number 7 is written as___________?

(a) 110

(b) 111

(c) 010

(d) 100

 

Correct Answer: B

Explanation- A binary number is a number expressed in the base-2 numeral system or binary numeral system, a method of mathematical expression that uses only two symbols: typically “0” (zero) and “1” (one). And the binary code of 7 is 111. Hence Option B is correct.

 

Q.6. Baking soda is___________?

(a) sodium carbohydrate

(b) sodium bicarbonate

(c) sodium sulphate

(d) sodium hydroxide

 

Correct Answer: B

Explanation- The chemical formula of baking soda is NaHCO3. Baking Soda is also defined as Sodium Bicarbonate. Hence Option B is correct.

 

Q.7.In which of the following regions, the ozone layer is present?

(a) Troposphere

(b) Ionosphere

(c) Stratosphere

(d) Exosphere

 

Correct Answer: C

Explanation- Most ozone (about 90%) is found in the stratosphere, which begins about 10–16 kilometres (6–10 miles) above Earth’s surface and extends up to about 50 kilometres (31 miles) altitude. The stratospheric region with the highest ozone concentration is commonly known as the “ozone layer”. Hence Option C is correct.

 

Q.8. Which metal played an important role in second urbanization?

(a) Gold

(b) Silver

(c) Copper

(d) Iron

 

Correct Answer: D

Explanation- Iron was the metal that played an important role in Second Urbanisation started in the 6th century BC. Hence Option D is correct.

 

Q.9. The disease caused by virus is __________?

(a) typhoid

(b) cholera

(c) common cold

(d) tetanus

 

Correct Answer: C

Explanation- Viruses are very tiny germs. They are made of genetic material inside of a protein coating. Viruses cause familiar infectious diseases such as the common cold, flu and warts. They also cause severe illnesses such as HIV/AIDS, Ebola, and COVID-19. Hence Option C is correct.

 

Q.10. Consider the following

1. Submarine communication
2. AM radio
3. Shortwave radio
4. Radar

Arrange the above in increasing the frequency of the waves used in their applications.

(a) 4 – 3 – 2 – 1

(b) 1 – 2 – 3 – 4

(c) 2 – 1 – 4 – 3

(d) 2 – 3 – 4 – 1

 

Correct Answer: B

Explanation- The order of increasing frequency are Submarine Communications>AM Radio>Short wave radio>Radar. Hence Option B is correct.