General Science - Online Test
Q1. The molar mass of is
Answer : Option D
Explaination / Solution:
Molar mass of Ag NO3
= [ atomic mass of Ag + atomic mass of N + 3 ( atomic mass of O ) ) ] u
Substituting the atomic masses of Ag , N & O as 107.9 , 14 & 16 ,respectively in the above expression we get -
=
=169.9 u
Q2. When the total utility is increasing at an increasing rate, marginal utility is___________?
Answer : Option C
Explaination / Solution:
No Explaination.
Q3. Which of the following has the largest moment of inertia?
Answer : Option A
Explaination / Solution:
Hence ring has largest moment of inertia.
Q4. In old age, arteries carrying blood in the human body, become narrow resulting in an increase in the blood pressure. This follows from
Answer : Option D
Explaination / Solution:
According to bernoulli principle for fluids: in ideal state pressure and density are inversely related or in other words a slow moving fluid exerts more pressure than a fast moving fluid. Due to narrowness and other obstruction the velocity of the flow of blood gets decreased in old age. This results in increased pressure inside the blood vessel.
Q5. Nissl granules in a nerve cell are now identified as
Answer : Option D
Explaination / Solution:
The nissl granules in nerve cell are now identified as ribosomes after discovery of electron microscope that provides highly magnified image for detailed study.
Q6. In fungus, food reserves is
Answer : Option D
Explaination / Solution:
In fungus, the food reserve is glycogen and fat. Different fungi contain different kinds of reserve food materials depending upon habitat and body structure of fungus.4
Q7. Which of the following oxides reacts with both HCl and NaOH?
Answer : Option B
Explaination / Solution:
ZnO is an amphroteric oxide.
Q8. Arrange the following carbanions in order of their decreasing stability.(A) H3C – C C– (B) H – C ≡ C– (C)
Answer : Option D
Explaination / Solution:
In B,the '-' charge is on sp hybridised C atom so the negative charge is stabilised.In A,there is an alkyl group attached to sp hybridised carbon which destabilises the negative charge. In C,the '-' charge is on a sp3 hybridised carbon and is hence the least stable.
Q9. PSU is
Answer : Option C
Explaination / Solution:
PSU stands for Public Sector Undertaking. These are also known as Public Sector Enterprises. It is the name given to the state owned enterprises in India.
Q10. The excess water collected in the form of droplets around special openings of veins near tip of leaves is called as
Answer : Option B
Explaination / Solution:
The excess water collects in the form of droplets around special openings of veins near the tip of grass blades, and leaves of many herbaceous parts. Such water loss in its liquid phaseis known as guttation.
