General Science - Online Test
Q1. The polyacrylamide gel is used to separate proteins as
Answer : Option B
Explaination / Solution:
Protein molecules are smaller than DNA polynucleotide. Protein and DNA can be separated by polyacrylamide gel having minute pores through which protein can pass but not the DNA.
Q2. The filtration fraction is the ratio of GFR to RPF where both the values are in ml/min and FF is expressed in percentage. Calculate FF for a normal adult human being, if RPF= 600ml/min :
Answer : Option D
Explaination / Solution:
Filtration fraction is the ratio of glomerular filtration rate (GFR) to the renal plasma flow (RPF). GFR of normal human is 120 ml/min. so,
FF =
= = 20%.
Q3. The coefficient of performance K of a refrigerator is given by
Answer : Option D
Explaination / Solution:
The performance of refrigerator is expressed by means of cofficient of performance
cofficient of performance = Heat extracted / work done =
Q4. An important evidence in favour of organic evolution is the occurrence of
Answer : Option D
Explaination / Solution:
There are many evidences that favor the organic evolution of life. According to this concept life originate from pre-existing organisms by evolution in cousr of time. Homologous and vestigial organs hit the uses of different organs in different organism for different purpose.
Q5. behaviour of the gas becomes more ideal when
Answer : Option D
Explaination / Solution:
This question is based on understanding the concept of molecular interactions between molecule of real gases which is least at low P and High T condition. Thus under these conditions real gases behave as ideal.
Q6. The value of for a reaction is directly related to the thermodynamics of the reaction and in particular,
Answer : Option A
Explaination / Solution:
Δ G = -RTlnK
Q7. Protein is generally a polypeptide with _______ amino acid residues
Answer : Option A
Explaination / Solution:
In protein more than 100 amino acids combine to form proteins
Q8. In monocotyledons, guard cell of stomata are
Answer : Option C
Explaination / Solution:
In monocotyledons, the guard cell of stomata are dumb-bell shaped, thicker on top and bottom and thinner in the middle.
Q9. It is the testing of a biological activity like growth response of a substance by employing a living material like plant or plant part.
Answer : Option B
Explaination / Solution:
Testing of biological activity like growth response of a substance by employing a living material like plant or plant part is called bioassay. It is used to know the effect of substance on plant growth.
Q10. Reason why there are many lines in an atomic spectrum is because
Answer : Option A
Explaination / Solution:
No Explaination.
