General Science - Online Test
Q1. According to the lac-operon concept, which functional unit of the bacterial gene material is responsible for suppressing the activity of the operator gene in the absence of lactose?
Answer : Option D
Explaination / Solution:
A regulator gene is a gene that codes for a repressor protein that inhibits the activity of an operator gene (a gene which binds repressor proteins thus inhibiting the translation of RNA to protein via RNA polymerase). In prokaryotes, regulator genes often code for repressor proteins.
Q2. Raising margin requirements by the central bank in India during deficient demand is
Answer : Option A
Explaination / Solution:
No Explaination.
Q3. The developing sperms are nourished by
Answer : Option D
Explaination / Solution:
Seminiferous tubules contain Spermatogonia and Sertoli cells. Spermatogonium undergoes meiotic division to produce sperms and Sertoli cells provide nourishment to them.
Q4. If under perfect competition, the price lies below the average cost curve, the firm would?
Answer : Option D
Explaination / Solution:
No Explaination.
Q5. Forest act was first enacted in
Answer : Option B
Explaination / Solution:
An Act to consolidate the law relating to forests, the transit of forest-produce and the duty leviable on timber and other forest-produce. The Indian Forest Act, 1927 was largely based on previous Indian Forest Acts implemented under the British.
Q6. The variation in properties in a group of p-block of elements is due to
Answer : Option C
Explaination / Solution:
The difference in properties of p block element is because of presence of inner lying d and f electrons which have poor shielding effect.
Q7. In C= -c+b(Y), ‘Y’ denotes
Answer : Option C
Explaination / Solution:
No Explaination.
Q8. A person who buys goods and services for the satisfaction of human wants
Answer : Option C
Explaination / Solution:
No Explaination.
Q9. Two charges A = -2.50 μC and B = 6.0 μC are at a distance of 1 meter from each other. Distance from A at which the electric field is zero in meters is
Answer : Option B
Explaination / Solution:
where x= distance of null point from small charge, d=distance between two charges, q2=bigger charge, q1=small charge, +1 for like charges and -1 for unlike charges
Q10. During mitosis ER and nucleolus begin to disappear at
Answer : Option C
Explaination / Solution:
During mitosis ER and nucleolus begin to diappear at late prophase stage indicated the beginning of next phase. It happens due to increased divisional activities of nucleus.
