General Science - Online Test
Q1. The Average revenue become negative when
Answer : Option B
Explaination / Solution:
No Explaination.
Q2. What does "lac" refer to in what we call the lac operon?
Answer : Option D
Explaination / Solution:
The lac operon (lactose operon) is an operon required for the transport and metabolism of lactose in Escherichia coli and many other enteric bacteria. Although glucose is the preferred carbon source for most bacteria, the lac operon allows for the effective digestion of lactose when glucose is not available.
Q3. Egg released by the Graafian follicle is surrounded by
Answer : Option A
Explaination / Solution:
One of the two ovary release one egg by the Graafian follicle. The egg released is surrounded by two layers called zonapellucida and Vitelline membrane as protective layer.
Q4. Floods can be checked by
Answer : Option B
Explaination / Solution:
Floods can be checked by reforestation. The roots of plants binds the soil and act as barrier in flow of flood water to reduce its current speed.
Q5. The sum of the s and p-electrons is called
Answer : Option D
Explaination / Solution:
Group oxidation state is the highest oxidation state exhibited by the elements present in any particular group.
For p block elements it is the sum of the s and p-electrons.
Q6. Economics is divided into three parts
Answer : Option D
Explaination / Solution:
No Explaination.
Q7. Consider a neutral conducting sphere. A positive point charge is placed outside the sphere. The net charge on the sphere is then,
Answer : Option A
Explaination / Solution:
If a charge q is placed outside than the electric field lines incident on the conducting sphere , if some charge is developed due to thee lines than opposite surface becomes oppositely charge and the total charge becomes zero.
Q8. An alkaloid widely used in plant breeding for doubling the chromosome number also known as ‘mitotic poison’ is
Answer : Option C
Explaination / Solution:
Colchicine is an alkaloid used in plant breeding for doubling of chromosomes by inhibiting cytokinesis. It is also called as mitotic poison. It is extracted from the bark of plant belonging to genus Colchicum.
Q9. Which one of the followings is incorrect about genetic drift?
Answer : Option B
Explaination / Solution:
Genetic drift is significant only in small population. Larger population has more variation and more species. Loss of some member of that species does not reduce variation essential for evolution.
Q10. Which serve as quick referral systems in taxonomical studies?
Answer : Option A
Explaination / Solution:
Museums have collections of preserved plant and animal specimens for study and reference. Manuals are useful in providing information for identification of names of species found in an area. Monographs contain information on any one taxon. Hence, the correct option is Herbarium.
