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. These questions are part of GKToday’s 35000+ MCQs Bank Course in GKToday Android App
1. How the Cast Iron is different from Wrought Iron?
- Cast iron have higher carbon content than wrought iron
- Cast iron are more ductile compared to wrought iron
- Wrought iron is more stable, pure and stronger, compared to cast iron
Select the correct option from the codes given below:
[A] 3 Only
[B] 1 and 3 Only
[C] 2 and 3 Only
[D] 1,2 and 3
Show Answer
Correct Answer: B [ 1 and 3 Only]
Notes:
Second statement is wrong because wrought iron is more ductile compared to cast iron
2. Which one of the following is the smallest endocrine gland in human body?
[A] Pancreas
[B] Thyroid
[C] Pituitary
[D] Adrenal
Show Answer
Correct Answer: C [Pituitary]
Notes:
Pituitary gland, called Master Gland, is the smallest endocrine gland. It controls the general growth of the body coordinating the functioning of other endo crime glands and stimulates the primary sex hormones, i.e. ovaries and testes.
3. Both, haemoglobin and myoglobin require ____ for formation:
[A] Vitamin A
[B] Vitamin B12
[C] Iron
[D] Calcium
Show Answer
Correct Answer: C [Iron]
Notes:
Haemoglobin is called as tetrameric hemoprotein, while myoglobin is called monomeric protein. Haemoglobin is found systematically all over the body, while myo-globin is found in muscles tissues only. The body requires iron for the synthesis of its oxygen transport proteins, in particular hemo-globin and myoglobin.
4. The second Green Revolution aims at increasing agricultural output to promote ____:
[A] Development of rural sector
[B] Availability of easy credit to big farmers
[C] Co-operative farming
[D] Inclusive growth
Show Answer
Correct Answer: D [Inclusive growth]
Notes:
According to 11th Fiver Year Plan, the Second Green Revolution aims to meet the problems of small and marginal farmers for providing income security to a large section of rural households and treating them as partners of development instead of a mere beneficiary of some government schemes or programme.
5. Wilting of plants occurs due to excessive ____:
[A] Respiration
[B] Glutation
[C] Absorption
[D] Transpiration
Show Answer
Correct Answer: D [Transpiration]
Notes:
Plant wilting occurs after excessive loss of water by transpiration and lesser absorption. i.e. rate of transpiration exceeds rate of water absorption. On a hot day, plants transpire heavily and cannot absorb water speedily to keep pace with transpiration loss, even when there is enough water.
6. Water of coconut is ____:
[A] Liquid nucellus
[B] Liquid endocarp
[C] Degenerated liquid endosperm
[D] Liquid mesocarp
Show Answer
Correct Answer: C [Degenerated liquid endosperm]
Notes:
Coconut water, the clear liquid inside young green coconuts (fruits of the coconut palm), is liquid endosperm. In early development, it serves as a sus pension for the endosperm of the coconut during their nuclear phase of development. It contains sugars, vitamins, minerals, proteins, free amino acids and growth promoting factors.
7. Growing agricultural crops between rows of planted trees is known as ____:
[A] Jhum
[B] Agro forestry
[C] Social forestry
[D] Taungya system
Show Answer
Correct Answer: D [Taungya system]
Notes:
The Taungya system involves growing agricultural crops between rows of planted trees (sal, teak, etc). Along with jhum cultivation, it is one of the well-known systems of agro forestry programmes in practice in our country.
8. Which of the following cell organelle contains DNA apart from nucleus?
[A] Golgi Apparatus
[B] Mitochondria
[C] Cytoplasm
[D] Ribosome
Show Answer
Correct Answer: B [Mitochondria]
Notes:
The three organelles that contain DNA are the nucleus, mitochondria and chloroplasts. Mitochondria are unlike most organelles (with an exception of plant chloroplasts) in that they have their own set of DNA and genes that encode proteins. They are specialized structures unique to the cells of animals, plants and fungi.
9. Which among the following has open circulatory system?
I. Cockroach
II. Human
III. Prawn
[A] I and II
[B] I and III
[C] II and III
[D] Only III
Show Answer
Correct Answer: B [I and III]
Notes:
Cockroach and prawns have open circulatory system in which the blood is not confined within blood vessels. The blood bathes the organs and tissues directly. Open circulatory systems pump blood into a hemocoel with the blood diffusing back to the circulatory system between cells. Blood is pumped by a heart into the body cavities, where tissues are surrounded by the blood. The open circulatory system is common to molluscs and arthropods.
10. A spore producing plant is ____:
[A] Rose
[B] Potato
[C] Ginger
[D] Bread mould
Show Answer
Correct Answer: D [Bread mould]
Notes:
Mould is a member of the fungi kingdom. Fungi can be defined as a plant without chlorophyll, so it cannot get energy directly from the sun. This means that fungi must use other plants and animals as its food source. This is why bread mould is so common because of the ingredients in bread, it is an excellent source of nutrition for many moulds to grow and thrive.
