RRB NTPC GK & Science Questions

Question 1

Which ICC Cricket Umpire has announced his retirement after ICC Cricket World Cup 2019?

Solution:

Answer :Option D

 

Oops! Wrong answer!

• On 6th July 2019, Ian Gould retired from umpiring, after standing in the World Cup match between India and Sri Lanka.

Ian Gould has till now umpired for around 74 test, 135 one days and 37 T-20’s overall in his International matches Umpiring career.

Difficulty Level: Medium
Correct Attempts: 39%
Topic: Sports

Question 2

Which supersonic cruise missile has been test fired by Indian Air Force on 22nd May 2019?

Solution:

Answer :Option A

 

Correct Answer

• The Indian Air Force has successfully test fired the aerial version of the supersonic BrahMos cruise missile from a Su-30 MKI fighter aircraft on 22nd May 2019.

• The 2.5 tonne air-to-surface missile has a range of around 300 km.

• The IAF became the first air force in the world to have successfully fired an air-launched 2.8 Mach surface attack missile of this category on a sea target.

Difficulty Level: Medium
Correct Attempts: 48%
Topic: National Affairs

Question 3

Largest fresh water lake in India is _________.

Solution:

Answer :Option C

 

Oops! Wrong answer!

Wular lake is considered as the largest fresh water lake of India. It is located in Bandipora district of Jammu and Kashmir.
Difficulty Level: Hard
Correct Attempts: 70%
Topic: Geography

Question 4

Moraines are formed in_________.

Solution:

Answer :Option A

 

Oops! Wrong answer!

A moraine is any glacially formed accumulation of unconsolidated glacial debris (soil and rock) that occurs in currently glaciated and formerly glaciated regions on Earth through geomorphological processes.
Difficulty Level: Medium
Correct Attempts: 39%
Topic: Geography

Question 5

Who has been appointed as the chairman of Microfinance Institutions Network (MFIN)?

Solution:

Answer :Option A

 

Oops! Wrong answer!

Manoj Kumar Nambiar has been appointed as the Chairman of Microfinance Institutions Network (MFIN).

• He was elected at 6th annual general meeting of MFIN.

• He is also a director on boards of IntelleCash Microfinance Network Company.

• He will replace Ujjivan Financial Services CEO and MD Samit Ghosh.

Difficulty Level: Medium
Correct Attempts: 44%
Topic: National & International Appointments

Question 6

Which of following are edible acids?

I. Tartaric acid

II. Citric acid

III. Nitric acid

Solution:

Answer :Option A

 

Correct Answer

* Tartaric acid is a organic acid that occurs naturally in many fruits, most notably in grapes, but also in bananas, tamarinds, and citrus.

* Citric acid is a weak organic acid present in citric fruits.

* Both tartaric acid and citric acid are edible acids, whereas nitric acid isn’t edible.

Difficulty Level: Medium
Correct Attempts: 65%
Topic: Chemistry

Question 7

Who has been named as the AIFF Men’s Footballer of the Year at AIFF 2018-19 Awards?

Solution:

Answer :Option C

 

Correct Answer

Sunil Chhetri has been awarded the Player of the Year award for a record-extending 6th time (2018-2019).

• He has already won Player of the Year award in 2007, 2011, 2013, 2014 and 2017.

• Ashalata Devi was named the AIFF Women’s Footballer of the Year (2018-2019).

• Dangmei Grace was adjudged the AIFF Emerging Women’s Footballer of the Year (2018-2019).

Difficulty Level: Medium
Correct Attempts: 78%
Topic: Sports

Question 8

Who is considered the “father of Wi-Fi”?

Solution:

Answer :Option D

 

Oops! Wrong answer!

Vic Hayes has been called the “Father of Wi-Fi” because he chaired the Institute of Electrical and Electronics Engineers (IEEE) committee that created the 802.11 standards in 1997.
• The 802.11 standard was established in 1997.
• The Commonwealth Scientific and Industrial Research Organisation (CSIRO) credits the following inventors for creating Wi-Fi: Dr. John O’Sullivan, Dr. Terry Percival, Mr. Diet Ostry, Mr. Graham Daniels and Mr. John Deane.
Difficulty Level: Medium
Correct Attempts: 23%
Topic: Discoveries & Inventions

Question 9

A tortoise named ‘Impressed’ has been discovered in which state of India?

Solution:

Answer :Option B

 

Oops! Wrong answer!

* A tortoise named ‘impressed’ has been discovered in Arunachal Pradesh.

* The male ‘Impressed’ Tortoise is smaller than the female which is 30 cm in length.

* This Manouria species is one-third the size of the Asian Forest Tortoise.

* Its scientific name is ‘Manouria Impressa“.

Difficulty Level: Medium
Correct Attempts: 41%
Topic: National Affairs

Question 10

The Harappan Civilzation was discovered in the year _____.

Solution:

Answer :Option B

 

Oops! Wrong answer!

The greatest cities Harappa emerged circa 2600 BCE along the Indus River valley in Punjab and Sindh. The civilization was discovered in the 1921 after excavations at Mohenjo-daro.
Difficulty Level: Medium
Correct Attempts: 73%
Topic: History

Question 11

The difference in the duration of day and night increases as one move form _

Solution:

Answer :Option D

 

Oops! Wrong answer!

As we move away from the equator to the poles the variations in duration of day and night become greater. Kashmir is over 30° away from the equator and so the difference in duration of day and night is more there and we feel that difference.
Difficulty Level: Medium
Correct Attempts: 27%
Topic: Geography

Question 12

The two richest Eco-zones of India are

Solution:

Answer :Option C

 

Correct Answer

The two richest Eco-zones of India are the Himalayas and the Western Ghats. Both have very large bio diversity and endemic species.
Difficulty Level: Easy
Correct Attempts: 58%
Topic: Geography

Question 13

Which countries are linked by the Khyber Pass?

Solution:

Answer :Option C

 

Correct Answer

The Khyber Pass, is a mountain pass connecting Afghanistan and Pakistan, cutting through the north-eastern part of the Spin Ghar mountains. An integral part of the ancient Silk Road, it is one of the oldest known passes in the world.
Difficulty Level: Medium
Correct Attempts: 46%
Topic: Geography

Question 14

Which from the following land-locked sea ?

Solution:

Answer :Option D

 

Oops! Wrong answer!

  • The Aral Sea a land-locked endorheic sea in Central Asia, straddles the boundary between Uzbekistan to the south and west and Kazakhstan to the north and east.
  • The name roughly translates as “Sea of Islands,” referring to more than 1,000 islands of 2.5 acres (one hectare) or more that dotted its waters.
  • Hence, option D is correct.
Difficulty Level: Medium
Correct Attempts: 30%
Topic: Geography

Question 15

The transition zone between two Ecosystems is called

Solution:

Answer :Option C

 

Correct Answer

An ecotone is a transition area between two biomes. It is where two communities meet and integrate. It may be narrow or wide, and it may be local (the zone between a field and forest) or regional (the transition between forest and grassland ecosystems). An ecotone may appear on the ground as a gradual blending of the two communities across a broad area, or it may manifest itself as a sharp boundary line.
Difficulty Level: Easy
Correct Attempts: 39%
Topic: Geography

Question 16

‘Lushai Hills’ located in which Indian state?

Solution:

Answer :Option A

 

Oops! Wrong answer!

The Lushai Hills are a mountain range in Mizoram and Tripura, India. The range is part of the Patkai range system and its highest point is 2,157 m high Phawngpui, also known as ‘Blue Mountain
Difficulty Level: Medium
Correct Attempts: 25%
Topic: Geography

Question 17

Which one of the following region is most rich in coal deposits?

Solution:

Answer :Option B

 

Oops! Wrong answer!

The Damodar valley is rich in coal. It is considered as the prime centre of coking coal in the country. Massive deposits are found in the central basin spreading over 2,883 square kilometres (1,113 sq mi).
Difficulty Level: Medium
Correct Attempts: 29%
Topic: Geography

Question 18

Sardar Sarovar Project is built across which river?

Solution:

Answer :Option C

 

Correct Answer

  • Sardar Sarovar Project is built across the river Narmada.
  • The Sardar Sarovar Dam is a gravity dam near Navagam, Gujarat.
  • It has  height of 163 meters.
Difficulty Level: Medium
Correct Attempts: 68%
Topic: Geography

Question 19

Tansa wildlife sanctuary is located in _____.

Solution:

Answer :Option A

 

Oops! Wrong answer!

  • Tansa wildlife sanctuary is located in the Wada, Shahapur and Mokhada Talukas in Thane district of Maharashtra.
  • It is at a distance of only 90kms from the city of Mumbai. The sanctuary covers an area of around 320 sq. km, houses many rare and endangered species of flora and fauna.
Difficulty Level: Medium
Correct Attempts: 33%
Topic: Geography

Question 20

Which of the following park is known for its efforts in saving the rare and almost extinct species of the Swamp Deer?

Solution:

Answer :Option A

 

Oops! Wrong answer!

Kanha National Park is another sought after destination in the list of national parks of Madhya Pradesh.
• Established in the year 1955, this park has gained a lot of attention due to its efforts in saving the rare and almost extinct species of the Swamp Deer, also known as ‘Barasingha’.
• It is also one of the well-maintained parks in Asia.
Difficulty Level: Medium
Correct Attempts: 33%
Topic: Geography

Question 21

A bioenergy source obtained by fermentation to supplement fossil fuel petrol is

Solution:

Answer :Option D

Ethanol is a bio fuel obtained by fermentation to supplement fossil fuel petrol. It is most often used as a motor fuel, mainly as a biofuel additive for gasoline. It is commonly made from biomass such as corn or sugar. Bioethanol is a form of quasi-renewable energy that can be produced from agricultural feed stocks. It can be made from very common crops such as sugarcane, potato, cassava and corn.
Difficulty Level: Easy
Correct Attempts: 36%
Topic: Chemistry

Question 22

Drying oils contain a fairly large proportion of:

Solution:

Answer :Option A

    • A drying oil is oil that hardens to a difficult, solid film after a period of exposure to air. The oil hardens through a chemical reaction in which the components crosslink by the action of oxygen.

 

    • Drying oils contain a fairly large proportion of Unsaturated fatty acids.

 

Difficulty Level: Easy
Correct Attempts: 49%
Topic: Chemistry

Question 23

During combustion of gaseous fuels, deficiency of air

Solution:

Answer :Option B

  • Air which  contains  the oxygen, and fuel have to come into contact with each other to make the fuel bum. A lack of air can cause the flame to become too long, as the fuel then has to search for oxygen further back in the kiln.
Difficulty Level: Medium
Correct Attempts: 22%
Topic: Chemistry

Question 24

Glycol is added to aviation gasoline because it

Solution:

Answer :Option C

Glycol is added to aviation gasoline because it prevents freezing of petrol.
Fuel system icing inhibitor (FSII) is an additive to aviation fuels that prevents the formation of ice in fuel lines. FSII is sometimes referred to by the registered, genericized trademark Prist. Jet fuel can contain a small amount of dissolved water that does not appear in droplet form. As an aircraft gains altitude, the temperature drops and Jet fuel’s capacity to hold water is diminished. Dissolved water can separate out and could become a serious problem if it freezes in fuel lines or filters, blocking the flow of fuel and shutting down an engine.
Hence, option C is correct.
Difficulty Level: Medium
Correct Attempts: 46%
Topic: Chemistry

Question 25

Natural rubber is a polymer of __________.

Solution:

Answer :Option C

  • Natural rubber is an addition polymer that is obtained as a milky white fluid known as latex from a tropical rubber tree. Natural rubber is from the monomer isoprene (2-methyl-1,3-butadiene), which is a conjugated diene hydrocarbon.
  • Later,by mixing sulfur and rubber, the properties of the rubber improved in being tougher, resistant to heat and cold, and increased in elasticity. This process was later called vulcanization after the Roman god of fire. Vulcanization causes shorter chains to cross link through the sulfur to longer chains.
Difficulty Level: Easy
Correct Attempts: 62%
Topic: Chemistry

Question 26

The chemical that is used to ripen mangoes is_______ .

Solution:

Answer :Option B

    • Calcium carbide i.e. CaC2 is a chemical compound that has its application mainly in the making of acetylene and calcium cyanamide.

 

    • In terms of mango ripening, it works by producing acetylene gas when is exposed to moisture. This process is quite similar in reaction to the natural ripening agent ethylene. Hence option B is the right answer.

 

Difficulty Level: Medium
Correct Attempts: 66%
Topic: Chemistry

Question 27

What is a brown coal?

Solution:

Answer :Option C

Brown coal is a soft brown combustible sedimentary rock formed from naturally compressed peat. It is also known as Lignite. Brown coal is measured the lowest rank of coal because of its relatively low heat content.
More about coal
• A hard, compact variety of coal that has a submetallic luster is known as Anthracite.
• A soft coal containing a tarlike substance called bitumen is known as Bituminous coal or black coal.
• A fuel with few impurities and a high carbon content usually made from coal is known as Coke (Fuel).
Hence option C is the right answer.
Difficulty Level: Medium
Correct Attempts: 45%
Topic: Chemistry

Question 28

Brown stains in vessels and clothes indicate the presence of high quantities of _______in water

Solution:

Answer :Option C

Brown stain in vessels and clothes indicate the presence of high quantities of manganese in water. This mineral gives water objectionable colour odor and taste. The manganese is most commonly found in earth crust, and that’s explain its presence in water. To get rid of the stain often the combination of hot water and vinegar is recommended.
Difficulty Level: Medium
Correct Attempts: 37%
Topic: Chemistry

Question 29

Which of the following elements has the lowest melting point?

Solution:

Answer :Option D

Fluorine has a low melting point and boiling point, the lowest of the halogens. This is because the instantaneous dipole-induced dipole bonds are weak due to F2 having less electrons than any other halogen molecules. Fluorine is the most electronegative element of all.
Difficulty Level: Medium
Correct Attempts: 41%
Topic: Chemistry

Question 30

If an atom of Calcium has mass number 42 and atomic number 20. How many neutrons does it contain?

Solution:

Answer :Option B

Number of neutrons is equal to 42-20=22.
Mass Number: It is the sum of the number of protons and neutrons in an atom of the element.
Atomic Number: It is the number of protons and electrons in an atom of the element.

RRB NTPC GK & Science Questions

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