General Science Questions (MCQs) for Competitive Examinations
General Science Multiple choice questions for GK paper in SSC, NDA, CDS, UPSC, UPPSC and State PSC Examinations.
1. Which Vitamin is also known as Tocopherol?
[A] Vitamin D
[B] Vitamin E
[C] Vitamin K
[D] Vitamin B
Show Answer
Correct Answer: B [Vitamin E]
Notes:
Vitamin E is a series of organic compounds consisting of various methylated phenols. Because the vitamin activity was first identified in 1936 from a dietary fertility factor in rats, it was given the name “tocopherol” or birth carrying vitamin.
There are eight forms of Vitamin E. In general, food sources with the highest concentrations of vitamin E are vegetable oils, followed by nuts and seeds including whole grains.
2. The name of Karl Landsteiner is associated with the discovery of which of the following ?
[A] Human Endocrine System
[B] Human Blood Groups
[C] Vitamin B Group
[D] Proteins
Show Answer
Correct Answer: B [Human Blood Groups]
Notes:
The name of Karl Landsteiner is associated with the discovery of Human Blood Groups. He was given the Nobel Prize for Physiology or Medicine in 1930 for his discovery in 1901 of, and outstanding work on, the blood groups.
3. Cell membranes contain some biochemicals which are responsible for cell recognition and adhesion. They are _________ ?
[A] Proteins
[B] Lipids
[C] glycoproteins and gycolipids
[D] None of the above
Show Answer
Correct Answer: C [glycoproteins and gycolipids]
Notes:
Cell membranes contain some biochemicals which are responsible for cell recognition and adhesion. They are glycoproteins and glycolipids. Lipid and proteins on the cell membrane surface often have short carbohydrate chains protruding out from the cell surface which are known as glycolipids and glycoproteins.
4. In which of the following diseases copper accumulates in tissues ?
[A] Fabry disease
[B] Canavan disease
[C] Wilson’s disease
[D] Gunther disease
Show Answer
Correct Answer: C [Wilson’s disease]
Notes:
Wilson’s disease is a genetic disorder in which excess copper builds up in the body. Symptoms are typically related to the brain and liver. Some of the symptoms are vomiting, weakness, fluid build up in the abdomen, swelling of the legs, etc.
5. Consider the Following:
- Crop Rotation helps in avoiding the building up of Pathogens
- Crop Rotation avoids Excessive depletion of Soil Nutrients
- Crop Rotation involves alternative cultivation of cereals like wheat
Which among the above statements are correct?
[A] 1 & 2 only
[B] 2 only
[C] 1 & 3 only
[D] All are correct
Show Answer
Correct Answer: A [1 & 2 only]
Notes:
There is alternate cultivation, but cereals with other crops. This is basically done by alternating the deep rooted crops and shallow rooted crops in alternation.
6. Which of the following statements is NOT true regarding the Vitamin C?
[A] Only Vitamin C is to be taken externally, all others are produced in the human body.
[B] Vitamin C is the only vitamin which is also a hormone.
[C] Scurvy is caused by the deficiency of Vitamin C
[D] Vitamin C is a water-soluble vitamin.
Show Answer
Correct Answer: B [Vitamin C is the only vitamin which is also a hormone.]
Notes:
Vitamin C is a water-soluble vitamin. Scurvy is caused by the deficiency of Vitamin C. Human body cannot produce vitamin C hence it is taken externally. Vitamin C is not a hormone.
7. Which among the following enzyme allows the cows to digest cellulose?
[A] beta-lactase
[B] alpha-amylase
[C] beta-amylase
[D] alpha-lactase
Show Answer
Correct Answer: C [ beta-amylase]
Notes:
Correct answer is beta-amylase. Regarding amylase there is an interesting fact that it has proved its role in Human evolution. The salivary amylase levels found in the human lineage are six to eight times higher in humans than in chimpanzees, which are mostly fruit eaters and ingest little starch relative to humans.
8. Which of the following is / are correct statements about Banyan Tree, which is India’s National Tree?
- It is a member of mulberry family
- It begins its life as epiphyte
- It respires through its aerial roots
Select the correct option from the codes given below:
[A] Only 1 & 2
[B] Only 1 & 3
[C] 1, 2 & 3
[D] Only 2
Show Answer
Correct Answer: A [ Only 1 & 2]
Notes:Banyan Tree is India’s National Tree.
- It’s a member of mulberry family. The mulberry family is known as Moraceae and this plant grows in India , Bangladesh and some other countries.
- The banyan Tree begins its life as epiphyte on a host tree, gathers nourishment and water from air (not the host). Despite being an epiphyte , the Ficus is an example of a strangler fig. Its roots grow down and around the stem of the host, their growth accelerating once the ground has been reached. neck after time, the roots coalesce to form a pseudo trunk, eventually strangling and killing the host.
The third statement is incorrect. Such aerial roots which help in respiration also are called Pneumatophores and are found in Mangroves.
9. In which among the following, the speed of sound would be maximum?
[A] Dry air at 0°C
[B] Dry air at 30°C
[C] Humid air at 0°C
[D] Humid air at 30°C
Show Answer
Correct Answer: D [ Humid air at 30°C]
Notes:
The speed of sound in a medium depends on temperature of the medium. The speed of sound decreases when we go from solid to gaseous state. In any medium as we increase the temperature the speed of sound increases.. The speed of sound will be highest in humid air at 30°C.
10. To fight the problem of malnutrition, the government of India is promoting the use of ‘double fortified salt’ in recent times. Which among the following are the two minerals used in the double fortified salt?
[A] Iron and Calcium
[B] Iodine and Calcium
[C] Iron and Iodine
[D] Iron and Magnesium
Show Answer
Correct Answer: C [ Iron and Iodine]
Notes:
Iron fortified iodized salt is known as double fortified salt.
