General Knowledge Pointers - 8

 

● The pressure at the bottom of a liquid tank does not depend on which area?

Answer :- Area of the liquid surface,

● Why is Weightlessness experienced in spaceship?

Answer :- Due to absence of gravity,

● How is Perchloric acid prepared?

Answer :- By the action of Concentrate sulphuric acid on potassium perchlorate,

● What is the Study of system of animal body which protects it from infection of various disease?

Answer :- Immunology,

● Aluminium surface are often ‘anodized’. This means deposition of a layer of which oxide?

Answer :- Zinc oxide,

● Which Animal is also known as Portuguese man of war?

Answer :- Physalia,

● Which metal is extracted by thermal reduction process?

Answer :- Copper,

● Which is used as a gift in Japan?

Answer :- Euplectella,

● When will a hot body radiate maximum energy?

Answer :- iIf its surface is black and rough,

● How is the heat transferred by the radiator of a refrigerator?

Answer :- More than that at the freezer,

● Which compound of zinc is white when cold and yellow when hot?

Answer :- ZnO,

● Pheretima posthuma is scientific name of which animal?

Answer :- Earth worm,

● An individual whose blood type is B may in an emergency donate blood to a person which blood groups?

Answer :- AB or B,

● Salts of which element provide colours to fireworks?

Answer :- Strontium and barium,

● Which organ have the capacity of regeneration?

Answer :- Liver,

● With the increase in temperature, what happens in the frequency of the sound from an organ pipe?

Answer :- Increases,

● When a coin placed in a bowl of water is seen from above how does it appears?

Answer :- Raised from its position,

● Which gland disapear during old age?

Answer :- Thymus,

● Which types of waves are used in a night vision apparatus?

Answer :- Infra-red-waves,

● When seen in green light, what will the saffron and green portions of our national flag appear?

Answer :- Black and green respectively,

● Which blood group is universal doner?

Answer :- O,

● What percentage of water found in blood plasma of human?

Answer :- 91 to 92%,