General Science - Online Test
Q1. Dark brown amorphous substance formed by degradation of cellulose and lignin in the soil to increase water holding capacity and aeration is
Answer : Option A
Explaination / Solution:
Dark brown amorphous substance formed by degradation of cellulose and lignin in the soil to increase water holding capacity and aeration is humus. It also increase fertility of the soil.
Q2. If an imaginary food contains 5 grams of protein, 4 grams of fat and 10 grams of carbohydrates. Now calculate total calories it would provide ( given 1g protein=4 calories, 1g fat = 10 calories, 1g carbohydrates = 4 calories ) :
Answer : Option B
Explaination / Solution:
Five gram of protein will produce 5 x 4 = 20 calories, 4 g of fat = 4 x 10 = 40 calories and 10 g of carbohydrates = 10 x 4 = 40 calories. So total energy produced is equal to 20 + 40 + 40 = 100 calories.
Q3. A person can see clearly only up to a distance of 30 cm. He wants to read a book placed at a distance of 50 cm from his eyes. What is the power of the lens he requires for his spectacles?
Answer : Option A
Explaination / Solution:
No Explaination.
Q4. Use of anti-histamines and steroids give a quick relief from
Answer : Option B
Explaination / Solution:
Anti-histamines and steroids give a quick relief from allergy. Allergy may be due to allergen like pollen grains, dust or other microbes. Common symptom of allergy is inflammation on skin.
Q5. The correct increasing order of radii of following species is ----?
Answer : Option B
Explaination / Solution:
It is because
(i) radius of anion ( anionic radius ) is greater , and
(ii) radius of cation ( cationic radius ) is lesser
than that of its parent neutral atom.
Q6. Capital intensive technique would get chosen in
Answer : Option B
Explaination / Solution:
Capital surplus is a term used by economists to denote capital inflows in excess of capital outflows on a country's balance of payment's.
Q7.
Read the following :
i. insects have taste receptors on their feets.
ii. crickets have ears on the legs.
iii. snakes are highly sensitive to air borne sounds.
iv. frogs have colour vision.
Answer : Option D
Explaination / Solution:
Insects have taste receptors on their feets.These receptor are located at different regions to get stimulus more accurately.
Crickets have ears on the legs and frogs have colour vision.
Q8. Where does breakeven point lie in a diagram?
Answer : Option B
Explaination / Solution:
No Explaination.
Q9. Lines in the hydrogen spectrum which appear in the ultraviolet region of the electromagnetic spectrum, then they are called as
Answer : Option A
Explaination / Solution:
The Lyman series is a hydrogen spectral series of transitions and resulting ultraviolet emission lines of the hydrogen atom as an electron goes from n ≥ 2 to n = 1 (where n is the principal quantum number), the lowest energy level of the electron.
Q10. Carbon dioxide and oxygen levels are maintained by:
Answer : Option D
Explaination / Solution:
Carbon dioxide and oxygen levels are maintained by Photosynthesis by plants and respiration by organisms.
