Search Previous Year Questions

The correct answer is Bushnell.

Key Points

• Submarine
• A submarine is capable of propelling itself beneath the water as well as on the water's surface.
• The submarine is referred to as a boat rather than a ship irrespective of its size.
• Bushnell
• Bushnell was an American inventor, one of the first American combat engineers.
• He invented the first submarine to be used in battle, as well as a floating mine triggered by contact.
• He was a veteran of the American War of Independence.

The correct answer is Jupiter.

Key Points

• Jupiter
• It is the largest planet in our Solar System.
• There are 79 natural satellites in Jupiter.
• The spacecraft which visited Jupiter is Juno.
• It is the third brightest natural object in the night sky after Moon and Venus.​

Additional Information 

• Earth
• Earth is the third planet from the sun in our solar system
• It is the only planet in our solar system known to support life.
• The moon is the only natural satellite of the earth.
• Venus
• It is the brightest planet in the Solar System.
• The revolution period of Venus is 225 days.
• It is also known as Evening and Morning Star.
• It is the hottest planet in the Solar System.
• Mercury
• It is the smallest and the closest planet to the Sun.
• Two spacecraft have visited Mercury: Mariner 10 and Messenger.
• It has no natural Satellite.

The correct answer is Pituitary Gland.

Key Points

• Pituitary Gland
• The pituitary gland is a small, bean-shaped gland situated at the base of the brain.
• It is the master gland of the body.
• It is the smallest endocrine gland in the human body.
• It releases hormones that regulate important functions such as growth, blood pressure, and reproduction.

Additional Information

• Thyroid Gland
• The thyroid gland is a butterfly-shaped organ located at the base of the neck.
• It releases hormones that control metabolism- the way body uses energy.
• It is the largest endocrine gland in the human body.
• Adrenal Gland
• The adrenal gland, also known as suprarenal glands, are small, triangular-shaped glands located on top of both kidneys.
• It produces hormones that help regulate your metabolism, immune system, blood pressure, response to stress, and other essential functions.
• Thymus gland
• The thymus gland is a small organ behind the breastbone that plays an important function both in the immune system and endocrine system.
• It is only active until puberty, after puberty the thymus gland starts to slowly shrink and become replaced by fat.

The correct answer is 206.

Key Points

• Bones
• It is the framework of the human skeletal system.
• Bones are living tissue in our body having their own blood vessels.
• They are made up of living cells, which help them to grow and to repair.
• These are mainly composed of proteins, minerals, and vitamins.
• Bone has a very hard matrix due to the presence of calcium salts.
• The adult human skeletal system consists of 206 bones which are grouped into the axial skeleton and appendicular skeleton.
• Out of 206 bones, 6 occur as ear ossicles and the remaining 200 bones are distributed into the axial and appendicular skeleton.
• The femur ( thigh bone) is the longest and the strongest bone in our body and is hollow.
• The smallest bone in the human body is the stapes bone( located in the ear).

The correct answer is 1,210,193,422.

Key Points

• Census 2011
• It was the 15^th Census of India and the 7^th Census of Independent India.
• Census 2011 Commissioner: C. Chandramouli
• Slogan: Our Census, Our Future
• No. of districts: 640
• No. of towns: 7933
• No.of villages: 640930
• The total population of India as per the Census 2011 is 1210.19 million of which 623.7 million were males and 586.46 million were females.
• Sex Ratio: 940 Females/1000
• Child Sex Ratio: 919( Rural- 923, Urban- 905)
• The density of Population: 382 Person/Km2
• Literacy Rate: 74.04% of the total population( males: 82.14% and females: 65.46%)
• Population Growth Rate during the decade: 17.7%

The correct answer is J.J. Thomson.

Key Points

• Electrons
• Electrons are subatomic particles that orbit the nucleus of an atom.
• The charge of an electron is equal in magnitude to the charge held by a proton( but has an opposite sign).
• An electron is a negatively charges particle.
• The mass of an electron is 1/1837 of a proton.
• Electron was discovered by cathode rays experiment by JJ Thomson in 1897.

Additional Information

The correct answer is $5\frac{1}{2}$hours.

Key Points

• Greenwich Mean Time
• It is the time measured on Earth's 0-degree longitude which passes through Old Royal Observatory London.
• The 0-degree longitude runs from the North Pole to the South Pole and is referred to as the Greenwich Meridian since 1884.
• A traveler going eastwards gains time from Greenwich until he reaches the meridian 180 degrees east when he will be 12 hours ahead of GMT.
• Similarly in going westwards, he loses 12 hours when he reaches 180 degrees west.
• There is a total difference of 24 hours or a whole day between the two sides of the 180 degrees meridian.
• Indian Standard Time
• IST is based on longitude 82.5 degrees east which passes through Mirzapur, near Allahabad in Uttar Pradesh.
• It is 5 hours 30 minutes ahead of Greenwich Mean Time.
• IST is observed in India and Sri Lanka.

The correct answer is German.

Key Points

• Albert Einstein
• He was a German-born Physicist, widely acknowledged to be one of the greatest physicists of all time.
• He revolutionized modern physics and quantum mechanics with the famous thesis on the Theory of Relativity and the photoelectric effect.
• He is widely known to the people for the mass-energy equivalence formula, E= mc².
• In 1921, he won the Nobel Prize for physics for his explanation of the photoelectric effect.

The correct answer is 82.14%.

Key Points

• Census 2011
• It was the 15^th Census of India and the 7^th Census of Independent India.
• Census 2011 Commissioner: C. Chandramouli
• Slogan: Our Census, Our Future
• No. of districts: 640
• No. of towns: 7933
• No.of villages: 640930
• The total population of India as per the Census 2011 is 1210.19 million of which 623.7 million were males and 586.46 million were females.
• Sex Ratio: 940 Females/1000 Males
• Child Sex Ratio: 919( Rural- 923, Urban- 905)
• The density of Population: 382 Person/Km2
• Literacy Rate: 74.04% of the total population( males: 82.14% and females: 65.46%)
• Population Growth Rate during the decade: 17.7%

The correct answer is Henry Becquerel.

Key Points

• Radioactivity
• The spontaneous process by which a nucleus disintegrates with some particle or electromagnetic radiation emission is called radioactivity.
• The instability of the nucleus is responsible for the phenomenon of radioactivity.
• The SI Unit of radioactivity is the becquerel (Bq).
• Henry Becquerel
• He was the first person to discover evidence of radioactivity.
• He won the Rumford Medal for his discovery of the radioactivity of uranium.

Additional Information

• J.J. Thomson
• He was a British physicist and Nobel Laureate in Physics.
• He discovered the electron, the first subatomic particle to be discovered.
• Otto Hahn
• He was a German chemist and a pioneer in the fields of radioactivity and radiochemistry.
• He was referred to as the father of nuclear chemistry.