81. How is permaculture farming different from conventional chemical farming?
1. Permaculture farming discourages monocultural practices but in conventional chemical farming, monocultural practices are predominant.
2. Conventional chemical farming can cause increase in soil salinity but the occurence of such phenomenon is not observed in permaculture farming.
3. Conventional chemical farming is easily possible in semi-arid regions but permaculture farming is not so easily possible in such regions.
4. Practice of mulching is very important in permaculture farming but not necessarily so in conventional chemical farming.
Select the correct answer using the codes given below.
a. 1 and 3
b. 1, 2 and 4
c. 4 only
d. 2 and 3
Ans. B
Solution
Permaculture is also possible in semi arid regions
https://ethical.net/ethical/permaculture-principles/
82. With reference to 'palm oil', consider the following statements:
1. the palm oil tree is native to southeast Asia.
2. The Palm oil is a raw material for some industries producing lipstick and perfumes.
3. The palm oil can be used to produce biodiesel
Which of the statements given above are correct?
a. 1 and 2 only
b. 2 and 3 only
c. 1 and 3 only
d. 1, 2 and 3
Ans. B
Solution
Native to Africa and brought to South asia 100 years ago
83. With reference to the Indus river system, of the following four rivers three of them pour into one of them which joins the Indus direct. AMong the following, which one is such river that joins the Indus direct?
a. Chenab
b. Jhelum
c. Ravi
d. Sutlej
Ans. D
Solution
SATLUJ meets directly to Indus
84. With reference to India, Didwana, Kuchaman, Sargol and Khatu are the names of
a. glaciers
b. mangrove areas
c. ramsar sites
d. saline lakes"
Ans. D
Solution
These are saline lakes in Rajasthan
85. Consider the following rivers:
1. Brahmani
2. Nagavalli
3. Subarnarekha
4. Vamsadhara
Which one of the above rise from the eastern ghats?
a. 1 and 2
b. 2 and 4
c. 3 and 4
d. 1 and 3
Ans. B
Solution
Brahmani's tributaries and subarnarekha river originate from Chota nagpur plateue
86. Consider the following statements:
1. The Global Ocean Commission grants licenses for seabed exploration and mining in international waters.
2. India has received licences for seabed mineral exploration in international waters.
3. 'Rare earth minerals' are present on seafloor in international waters.
Which one of the following statements given above are correct?
a. 1 and 2 only
b. 2 and 3 only
c. 1 and 3 only
d. 1,2 and 3
Ans. B
Solution
International Seabed Authority gives licences for sea exploration. India in pioneer in the licence in the Indian ocean which is having many rare earth minerals on seafloor
87. Among the following, which one is the least water-efficient crop?
a. Sugarcane
b. Sunflower
c. Pearl millet
d. Redgram
Ans. A
Solution
sugarcane is much water taking crop while millet and red gram are water effficient crops
88. Consider the following statements:
1. In the tropical zone, the western sections of the oceans are warmer than the eastern sections owing to the influence of trade winds.
2. In the temperate zone, westerlies make the eastern sections of oceans warmer than the western sections.
Which of the statements given above is/are correct?
a. 1 only
b. 2 only
c. Both 1 and 2
d. Neither 1 nor 2
Ans. B
Solution
western section of the oceans are colder while western coasts of the continents are warmer
89. In the context of India's preparation for Climate smart agriculture, consider the following statements:
1. The 'Climate-Smart Village' approach in India is a part of a project led by the Climate Change, Agriculture and Food Security (CCAFS), an International research programme.
2. The prject of CCAFS is carried out under Consultative Group on International Agricultural Research (CGIAR) headquarted in France.
3. The International Crops Reasearch Institute for Semi- Arid Tropics (ICRISAT) in India is one of the CGIAR's research centres.
Which of the statements given above are correct?
a. 1 and 2 only
b. 2 and 3 only
c. 1 and 3 only
d. 1, 2 and 3
Ans. D
Solution
all correct
https://ccafs.cgiar.org/news/what-are-climate-smart-villages#:~:text=Climate%2DSmart%20Villages%20are%20taking,build%20resilience%20to%20climate%20change.&text=It%20is%20not%20unusual%20for,erratic%20and%20extreme%20weather%20events.
90. “Leaf litter decomposes faster than in any other biome and as a result the soil surface is often almost bare. Apart from trees, the vegetation is largely composed of plant forms that reach up into the canopy vicariously, by climbing the trees or growing as epiphytes, rooted on the upper branches of trees.” This is the most likely description of
a. coniferous forest
b. dry deciduous forest
c. mangrove forest
d. tropical rain forest
Ans. D
These are tropical rain forest biome properties.
91. Water can dissolve more substances than any other liquid because
a. it is dipolar in nature.
b. it is good conductor of heat.
c. it has high value of specific heat
d. it is an oxide of hydrogen
Ans. A
Solution
Water dissolves many substances because it contains extremely polar hydrogen bonds. The polarity of the bonds between the two hydrogen atoms and the oxygen atom means that two sides of the molecule gain different charges - one slightly positive and one slightly negative
92. With reference to street-lightning, how do sodium lamps differ from LED lamps?
1.Sodium lamps produce light in 360 degrees but it is not so in the case of LED lamps
2. As street-lights, sodium lamps have longer life span than LED lamps.
3. The spectrum of visible light from sodium lamps is almost monochromatic while LED lamps offer significant colour advantages in street lightning.
Select the correct answer using the code given below.
a. 3 only
b. 2 only
c. 1 and 3 only
d. 1,2 and 3
Ans. C
Solution
https://www.heisolar.com/led-vs-hps-street-lights-whats-better-in-2020/
93. The term 'ACE2' is talked about in the context of
a. genes introduced in the genetically modified plants
b. developed of India's own satellite navigation system
c. radio collars for wildlife tracking
d. spread of viral diseases
Ans. D
94. Bisphenol A (BPA), a cause of concern, is a structural/key component in the manufacture of which of the following kinds of plastics?
a. Low-density polyethylene
b. Polycarbonate
c. Polyethylene terephthalate
d. Polyvinyl chloride
Ans. B
Solution
Bisphenol A, or BPA, is a chemical compound used to make polycarbonate plastics, epoxy resins, and other materials
95. ‘Triclosan’, considered harmful when exposed to high levels for a long time, is most likely present in which of the following?
a. Food preservatives
b. Fruit-ripening substances
c. Reused plastic containers
d. Toiletries
Ans. D
Solution
Triclosan is present in toothpastes, mouthwashes, soaps, deodorants and cleaning products, anti-bacterial ingredients help maintain healthy bodies and clean homes.
96. Which one of the following is a reason why astronomical distances are measured in light-years?
a. Distances among stellar bodies do not change
b. Gravity of stellar bodies does not change
c. Light always travels in straight line.
d. Speed of Light is always same."
Ans. D
97. We adopted Parliamentary democracy based on the British model, but how does our model differ from that model?
1. As regards legislation, the British Parliament is supreme or sovereign but in India, the power of the Parliament to legislate is limited.
2. In India, matters related to the constitutionality of the Ammendment of an Act of the Parliament are referred to the Constitution Bench by the Supreme court.
Select the correct answer using the code given below.
a. 1 only
b. 2 only
c. Both 1 and 2
d. Neither 1 nor 2
Ans. A
Solution
The authority and jurisdiction of Parliament are limited by the Powers of the other organs, the distribution of legislative powers between the Union and the States, the incorporation of a code of justiciable fundamental rights, the general provision for Judicial review and an independent judiciary. The Supreme Court can declare a law passed by Parliament null and void, as violative of fundamental rights, or as contravening other provisions of the Constitution. Also, under the ruling of the Supreme Court, there are limits to the constituent power in as much as Parliament cannot alter what have been called the basic features of the Constitution.
https://rajyasabha.nic.in/rsnew/practice_procedure/naccount.asp
98. With reference to the Union Government, consider the following statements:
1. N. Gopalaswamy Iyengar committee suggested that a minister and a secretary be designated solely for pursuing the subject of administrative reform and promoting it.
2. In 1970, the Department of Personnel was constituted on the recommendation of the Administrative Reforms Commission, 1966, and this was placed under the Prime Minister's charge.
Which of the following statements given above is/are correct?
a. 1 only
b. 2 only
c. Both 1 and 2
d. Neither 1 nor 2
Ans. D
Solution
The ARC 1 suggested that a minister and a secretary be designated solely for pursuing the subject of administrative reform and promoting it.
In 1970, on the basis of the recommendations of the Administrative Reforms Commission, the Department of Personnel was set up in the Cabinet Secretariat. In 1977, the Department of Personnel and Administrative Reforms was transferred to the Ministry of Home Affairs. And, in 1985,[1] a full-fledged ministry was created with the name Ministry of Personnel, Public Grievances and Pensions with three separate departments under it:
Department of Personnel and Training Department of Administrative Reforms and Public Grievances Department of Pensions and Pensioners’ Welfare"
99. ‘Right to Privacy’ is protected under which Article of the Constitution of India?
a. Article 15
b. Article 19
c. Article 21
d. Article 29
Ans. C
100. Consider the following statements:
1. In India, there is no law restricting the candidates from contesting in one Lok Sabha election from three constituencies.
2. In 1991 Lok Sabha election, Shri Devi Lal contested from three Lok Sabha constituencies
3. As per the existing rules, if a candidate contests in one Lok Sabha election from many constituencies, his/her party should bear the cost of bye-elections to the constituencies vacated by him/her in the event of him/her winning in all the constituencies.
Which of the statements given above is/are correct?
a. 1 only
b. 2 only
c. 1 and 3
d. 2 and 3
Ans. B
Solution
Section 33(7) of the Representation of People’s Act permits a candidate to contest any election (Parliamentary, State Assembly, Biennial Council, or bye-elections) from up to two constituencies. The provision was introduced in 1996 prior to which there was no bar on the number of constituencies from which a candidate could contest.
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