General Science - Online Test
Q1. Term acid rain was coined for the first time by
Answer : Option A
Explaination / Solution:
Robert August Smith was a Scottish chemist, who investigated numerous environmental issues. He is known for his research on air pollution in 1852, in the course of which he discovered what came to be known as acid rain. He is sometimes referred to as the 'Father of Acid Rain'.
Acid rain occurs due to presence of Sulphur dioxide and nitrogen oxide in atmosphere.
Q2. In a homogeneous mixture,the components are
Answer : Option D
Explaination / Solution:
In a homogeneous mixture ,
(i) the components are mixed together completely ,
(ii) has a uniform composition throughout.
Q3. The reaction RX + 2Na + RX _______________? R – R + 2NaX is called.
Answer : Option A
Explaination / Solution:
This name reaction wurtz reaction.when 2 moles alkyl halide reacts with sodium then it is called wurtz reaction.
Q4. The Third Generation Computer was made with..........
Answer : Option C
Explaination / Solution:
No Explaination.
Q5. The following compound can be called as
Answer : Option B
Explaination / Solution:
It is dextrotatory , as second last hydroxy group is in right position.
Q6. Some scientist consider virus as living entities because they can
Answer : Option D
Explaination / Solution:
Virus is called as borderline of living and non-living. Viruses act as living one when inside the other living organism and reproduce very fast. When outside the living body, virus behaves as molecules without any sign of living.
Q7. Electronic communication is not possible if
Answer : Option A
Explaination / Solution:
As the information or message is transmitted from the source to the receiver ,it is first converted into electrical signal which is then transmiited through the communication medium.Hence in electrical communication it is must to convert raw message or information into electrical signal.Else the electronic messages will not be transmitted.
Q8. APS=
Answer : Option B
Explaination / Solution:
No Explaination.
Q9. What was the percentage of population dependent directly or indirectly on agriculture
Answer : Option A
Explaination / Solution:
About 85 percent of the country’s population lived mostly in villages and derived livelihood directly or indirectly from agriculture.
Q10. The rate of reaction can be measured as
Answer : Option B
Explaination / Solution:
Rate of reaction can be measured in terms of Rate of disappearance of reactant or rate of apperance of product.
