General Science - Online Test
Q1. According to Marshall, the law of diminishing marginal utility applies on ___________?
Answer : Option B
Explaination / Solution:
No Explaination.
Q2. The thermal stability of hydrides of group 16 elements decreases in the order
Answer : Option A
Explaination / Solution:
As we move down the group bond length increases and bond enthalpy for the dissociation of H-E bond decreases. Due to decrease in enthalpy the thermal stability of hydrides decreases down the group.
Q3. Passive water absorption by root system is due to
Answer : Option C
Explaination / Solution:
Absorption of water by root system is passive due to tension in sap created by transpiration. No energy molecule is required in this process, so it is passive in nature.
Q4. The moment of inertia of a body about any axis is
Answer : Option C
Explaination / Solution:
according to parallel axis theorem the moment of inertia of a body about any axis is equal to the sum of the moment of inertia of the body about a parallel axis passing through its Centre of mass and the product of its mass and the square of the distance between the two parallel axes.
Q5. The lift on an aircraft wing arises because of
Answer : Option C
Explaination / Solution:
This is the application of Bernoulli's Theorem.
If air speeds up the pressure is lowered.Thus,a wing generates lift because the air goes faster over the top creating a region of low pressure,and thus lift.
Q6. Enthalpy of solution of a substance is the enthalpy change
Answer : Option D
Explaination / Solution:
Enthalpy of solution of a substance is the enthalpy change when one mole of it dissolves in a specified amount of solvent
Q7. Epithelium covering in tongue is
Answer : Option C
Explaination / Solution:
Tongue is covered by non-keratinized squamous epithelial tissues having taste buds of different kinds in different regions of tongue.
Q8. Which bacteria help in oxidising inorganic substances?
Answer : Option C
Explaination / Solution:
Chemosynthetic autotrophic bacteria oxidise various inorganic substances such as nitrates, nitrites and ammonia and use the released energy for their ATP production. They play a great role in recycling nutrients like nitrogen, phosphorous, iron and sulphur.
Q9. Opening up the Indian economy to foreign investors and allowing Indian investors to invest abroad
Answer : Option A
Explaination / Solution:
Globalisation is the integration of the domestic economy with the rest of the world through trade and capital (investment) flows.
Q10. Real exchange rate is the price of
Answer : Option B
Explaination / Solution:
Real exchange rate tells how much the goods and services in the domestic country can be exchanged for the goods and services in a foreign country.
