General Science - Online Test
Q1. Which type of cell division helps in regeneration?
Answer : Option A
Explaination / Solution:
Regeneration is the ability of organism to regain its lost body parts. Regeneration is achieved by mitotic cell division to maintain same number of chromosomes in the cell.
Q2. Which of the following sentences is incorrect about microspheres?
Answer : Option D
Explaination / Solution:
Microspheres are molecules developed during organic evolution. They do not have all properties of life. They are composed of protein molecule and form buds to develop smaller microspheres.
Q3. The existence of a wide range of different types of organisms in a given place at a given time is
Answer : Option D
Explaination / Solution:
The parks and zoo are the places where wild animals are kept in protected environments under human care. Museums have collections of preserved plant and animal specimens for study and reference. Hence, the correct option is Biodiversity.
Q4. Absence of menstruation during period of intense lactation following parturition is called as
Answer : Option A
Explaination / Solution:
During intense lactation just after the delivery the menstrual cycle get stopped and there is no chance of pregnancy. This absence of menstruation is called lactational amenorrhea.
Q5. In the network shown in the figure, C1 = 6 and C = 9 . The equivalent capacitance between points P and Q is
Answer : Option B
Explaination / Solution:
The circuit is reduced as follows: The capacitances are in micro farads.
The capacitance between P and Q is 3μF
The capacitance between P and Q is 3μF
Q6. Removal of RNA polymerase III from nucleoplasm will affect the synthesis of
Answer : Option B
Explaination / Solution:
During transcription of m-RNA, removal of RNA polymerase III form nucleoplasm will affect the synthesis of t-RNA. The t-RNA transfers the amino acids to the site of translation to form protein.
Q7. Five oogonia yield 10 primary oocytes, then how many ova are produced on completion of oogenesis?
Answer : Option B
Explaination / Solution:
Each oogonium produces one ovum at the end of oogenesis process and three polar bodies. Thus, five oogonia will produce five ova at the completion of oogenesis process.
Q8. Jhum cultivation refers to
Answer : Option A
Explaination / Solution:
Jhum cultivation refers to tribal method of shifting cultivation by clearing forest for agriculture again and again. It is an act of deforestation.
Q9. As we move from B to Al in the p-block elements the sum of the first three ionisation enthalpies
Answer : Option A
Explaination / Solution:
On moving from B to Al size of the atom increases. So ionisation enthalpy decreases. Thus as we move from B to Al in the p-block elements the sum of the first three ionisation enthalpies considerably decreases.
This is the reason aluminium forms Al3+ ion.
This is the reason aluminium forms Al3+ ion.
Q10. Identify non-economic activity
Answer : Option B
Explaination / Solution:
No Explaination.
