General Science - Online Test
Q1. In prokaryotes, the reserved food material is stored in
Answer : Option B
Explaination / Solution:
Reserve material in prokaryotic cells are stored in the cytoplasm in the form of inclusion bodies.
Q2. ________ are those which are already in existence and which might be collected for some purpose other than the answering of the question in hand.
Answer : Option D
Explaination / Solution:
The organisation's objective of collecting the data may be different from the objective of the one who is using that data.
Q3. UV radiation seems responsible for (i) Skin cancer in humans (ii) Lower production of phytoplankton (iii) Influence the growth of terrestrial plants (iv) Decrease in cattle production. Options are
Answer : Option C
Explaination / Solution:
No Explaination.
Q4. What does A & B represent?
Answer : Option C
Explaination / Solution:
In figure above, A represent helicase and B represents single strand binding protein. These structures are formed during semi-conservative replication of DNA.
Q5. A current is passed though two coils connected in series. The potential difference across the first coil of resistance 2 ohm is 5 volt. If the potential difference across the second coil is 12.5 volt the resistance of the second coil is
Answer : Option A
Explaination / Solution:
The current in the circuit
V1 =5 V is the p.d across the first coil of resistance R1=2Ω. The same current flows through the second coil of resistance X. . The p.d across the second coil V2 =12.5 V.
Q6. In simple harmonic motion the damping force is
Answer : Option C
Explaination / Solution:
In real oscillators, friction, or damping, slows the motion of the system. Due to frictional force, the velocity decreases in proportion to the acting frictional force.
where the c is the damping constant
Q7. Conditions favouring decomposition are
Answer : Option C
Explaination / Solution:
Decomposition rate accelerate at high temperature and high humidity. At higher temperature and high humidity number of decomposer increases substantially that accelerate the decomposition.
Q8. Referring to the Young’s double slit experiment, Phase difference corresponding to a Path Difference of λ /3 is
Answer : Option A
Explaination / Solution:
No Explaination.
Q9.
Diborane is one of the following
Answer : Option A
Explaination / Solution:
Diborane is said to be electron deficient because boron require 5 electrons to complete its octet. But in this molecule, each boron atom is bonded to 2 terminal hydrogen atoms each. Also, the two boron atoms are held together by two hydrogen atoms as shown below:
Q10. Which one of the following is commonly used in transfer of foreign DNA into crop plants?
Answer : Option B
Explaination / Solution:
Genetically modified foreign DNA is transferred into crops plants through a vector. Agrobacterium tumefaciens is most common bacterium used for this purpose.
