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. Flowers emit fragrance to ____:
[A] Drive away flies
[B] Purify air
[C] Attract insects
[D] All of the above
Show Answer
Correct Answer: C [Attract insects]
Notes:
Flowers emit fragrance to attract pollinators which are mainly insects. The fragrance plays a prominent role in the localization and selection of flowers by insects, especially moth-pollinated flowers, which are detected and visited at night. If they have become infested with herbivores like caterpillars, they attract beneficial insects like parasitic wasps with the help of scent signals from their leaves.
2. Which of the following is not a connective tissue?
[A] Cardiac Muscle
[B] Areolar Tissue
[C] Compact Bone
[D] Adipose Tissue
Show Answer
Correct Answer: A [Cardiac Muscle]
Notes:
Connective tissue is a group of tissues in the body that maintain the form of the body and its organs and provide cohesion and internal support. Bone, ligaments, tendons, cartilage, and adipose (fat) tissue are examples of connective tissue. Cardiac muscle is an example of muscle tissue. It is so named because it is found in the heart.
3. What is commonly known as white plague?
[A] Typhoid
[B] Malaria
[C] Tuberculosis
[D] Plague
Show Answer
Correct Answer: C [Tuberculosis]
Notes:
Tuberculosis caused by Mycobacterium tuberculie which primarily affects lungs although can affect other body too while early 19th century was called ‘white plague’ because of the large number of the people dying of its infection.
4. In the context of agriculture, the term barani refers to ____:
[A] Rain-fed farming
[B] Irrigated farming
[C] Mixed farming
[D] Dry farming
Show Answer
Correct Answer: A [Rain-fed farming]
Notes:
Barani area are traditionally rain-fed areas. These are any low rain area where the rain-fed dry farming is practiced. Bagar tract, the dry sandy tract of land on the border of Rajasthan state adjoining the states of Haryana and Punjab, is an example of Barani land.
5. Which among the following constitutes the central nervous system in human body?
[A] Only brain
[B] Only blood
[C] Only spinal cord
[D] Both brain and spinal cord
Show Answer
Correct Answer: D [Both brain and spinal cord]
Notes:
The central nervous system (CNS) controls most functions of the body and mind. It consists of two parts: the brain and the spinal cord. Both the brain and spinal cord are protected by a three-layered covering of connective tissuecalled the meninges.
6. How the rate of absorption of water through roots can be increased?
[A] Keeping the plants under the fan
[B] Keeping the plants in the dim light
[C] Keeping the plants in the shade
[D] Covering the plants with a polythene bag
Show Answer
Correct Answer: A [Keeping the plants under the fan]
Notes:
When a plant is placed under the fan, the speed of air is increased which leads to high rate of transpiration through the stomata. The increase in the rate of transpiration increases the water absorption also. As by keeping the plants under the fan, the transpiration process is boosted. Therefore, more amount of water and other minerals are absorbed by the plant roots from the soil.
7. Which of the following acids is synthesized in human stomach?
[A] Hydrochloric acid
[B] Sulphuric acid
[C] Nitric acid
[D] Phosphoric acid
Show Answer
Correct Answer: A [Hydrochloric acid]
Notes:
A typical adult human stomach will secrete about 1.5 liters of gastric acid daily. The best-known component of gastric juice is hydrochloric acid, the secretory product of the parietal, or oxyntic cell. It is known that the capacity of the stomach to secrete HCl is almost linearly related to parietal cell numbers.
8. Solitary cymose inflorescence is observed in ____:
[A] Rose
[B] Tuberose
[C] Chinarose
[D] Gardenia
Show Answer
Correct Answer: D [Gardenia]
Notes:
Solitary cymose inflorescence refers to a determinate inflorescence composed of a single flower. Examples include poppy, gardenia (ornamental plant), tulip, etc. Flowers are said to be solitary when the plant bears only one, or when single flowers appear on the ends of lateral branches that are remote from one another.
9. Mycobacterium leprae is a ____:
[A] Bacillus
[B] Spiral
[C] Coccus
[D] Spore
Show Answer
Correct Answer: A [Bacillus]
Notes:
Mycobacterium leprae is a bacillus (rod-shaped) bacterium that causes leprosy, also known as “Hansen’s disease”, which is a chronic infectious disease that damages the peripheral nerves and targets the skin, eyes, and muscles, upper respiratory tract, and nasal mucosa (lining of the nose).
10. The large carnivores are also called ____:
[A] Tertiary consumers
[B] Primary consumers
[C] Secondary consumers
[D] None of the above
Show Answer
Correct Answer: A [Tertiary consumers]
Notes:
A carnivore is an organism that mostly eats meat, or the flesh of animals. Carnivores that eat herbivores are called secondary consumers, and large carnivores that eat other carnivores are called tertiary consumers. Animals and people who eat both animals and plants are called omnivores. Sometimes carnivores are also called predators.
