General Science - Online Test
Q1. Cytoskeleton is made of
Answer : Option A
Explaination / Solution:
Cytoskeleton is a series of intercellular proteins that help a cell with shape, support andmovement. So, cytoskeleton is made up of proteinaceous filaments.
Q2. Which of the following is not the published source.
Answer : Option B
Explaination / Solution:
Website is not the published source because it is not published with the consent of respective authority.
Q3. Following are abiotic elements except
Answer : Option D
Explaination / Solution:
All living elements are biotic like birds,animals and plants,forests,fisheries,etc... whereas all non- living elements are abiotic like air,water,land,etc...
Q4. By which bonds the purine & pyrimidine pairs of Complementary Strands of DNA held together?
Answer : Option D
Explaination / Solution:
Three hydrogen bonds form between guanine and cytosine. Two hydrogen bonds form between adenine and thymine or adenine and uracil. Complementary pairs always involve one purine and one pyrimidine base.
Q5. The instrument for the accurate measurement of the e.m.f of a cell is
Answer : Option D
Explaination / Solution:
Both potentiometer and voltmeter are devices to measure potential difference. E M F is the terminal p.d between the electrodes of a cell in open circuit, i.e., when no current is drawn from it. Potentiometer measures the potential difference using null deflection method, where no current is drawn from the cell; whereas voltmeter needs a small current to show deflection. So, accurate measurement of p.d is done using a potentiometer.
Q6. How can you describe a periodic motion
Answer : Option D
Explaination / Solution:
A motion of a body that repeats itself at regular intervals of time on the same path like rotation of earth around sun in 365.25 days
Q7. Producers in the aquatic ecosystem are :
Answer : Option A
Explaination / Solution:
Phytoplanktons are small floating photosynthetic unicellular plant. In the aquatic ecosystem phytoplankton are producers that fix solar energy by the process of photosynthesis.
Q8. Ligand en is an example of
Answer : Option D
Explaination / Solution:
Q9. Emission and absorption is best described by,
Answer : Option A
Explaination / Solution:
No Explaination.
Q10. Hydrogen is unique in behaviour because of its
Answer : Option D
Explaination / Solution:
It has extremely small size with no neutron. So it can lose and gain electron which make it unique.
