General Science - Online Test

Q1. Monetary neutrality implies that in the long run:
Answer : Option B
Explaination / Solution:
No Explaination.


Q2. A jet lands on an aircraft carrier at 30 m/s. It stops in 2.0 s? What is the displacement of the plane in m while it is stopping?
Answer : Option C
Explaination / Solution:

Initial velocity u = 30 m/s

As it stop so final velocity v = 0 m/s

Time t = 2 s

Distance covered = s

We know,

s = 


=> s = 30 m


Q3. When a wave undergoes reflection at rarer medium then it undergoes a phase difference of
Answer : Option C
Explaination / Solution:
No Explaination.


Q4. Hemophilia is more commonly seen in human males than in human females because
Answer : Option A
Explaination / Solution:

Hemophilia is sex-linked recessive disease due to mutation in X-chromosome. In this disease blood clotting do not takes place in case of injury and minor cut leads to death of individual.

Q5. The relationship between TR and MR when price is constant.
Answer : Option D
Explaination / Solution:
No Explaination.


Q6.

The bacteria which grows anaerobically on cellulose material and produces large amount of methane along with  and  are collectively called

Answer : Option A
Explaination / Solution:

Methanogens are autotrophic archebacteria that use anaerobic respiration for ATP synthesis.

Methanogens use CO​​​​​2 taken up from their growth environment as the carbon substrate for growth. They use some CO​​​​​2 as the ultimate oxidizing agent of an electron transport chain which, by a chemiosmotic mechanism, maintains a transmembrane electrochemical ion gradient which powers ATP production.

The reducing agent that drives the electron transport chain is hydrogen also taken up from the growth environment. This hydrogen is the waste end product of the metabolism of other, heterotrophic microorganisms. Methanogens use this hydrogen and this process maintains a lowered hydrogen partial pressure in the reticulo-rumen.

It is present in  dung of animals.

 


Q7. Which of the following is a mismatched pair?
Answer : Option C
Explaination / Solution:

Amphibians have arteriovenous heart and two accessory chambers. Fishes have two chambered venous heart and two accessory chambers. In mammals complete double circulation with four chambered heart without any accessory chambers.

Q8. Which one of the following conversions involve change in both hybridization and shape?
Answer : Option C
Explaination / Solution:

BF3 has sp2 hybridisation and its shape is triangular planar While BF4- has sp3 hybridisation and shape is tetrahedral.

Q9. Expression for the mutual inductance between a long straight wire and a square loop of side a as shown in figure is

Answer : Option D
Explaination / Solution:


dA=adrB=μ04π2irϕ=BdA=xx+aμ04π2iradrϕ=μ0a2πln(1+1x)

Q10. State the part of the electromagnetic spectrum to which 21 cm (wavelength emitted by atomic hydrogen in interstellar space).belongs
Answer : Option B
Explaination / Solution:
No Explaination.