Category: Biology Second Paper

BCS : Green House Effect refers to- [12th BCS]

(a) Deficiency in photosynthesis due to lack of sunlight
(b) Increase in overall temperature due to heat trapping
(c) Increasing need for artificial cultivation instead of natural cultivation
(d) Spread of deserts due to loss of vegetation cover

Answer : (b) Increase in overall temperature due to heat trapping

BCS : Remote Sensing specifically means- [12th BCS]

(a) Remote data collection with radio transmitters
(b) Observation of the surrounding environment with the help of radar
(c) Detection of signals from cosmic sources
(d) Remote observation of Earth with the help of satellites

Answer : (d) Remote observation of the earth with the help of satellites

BCS : Sailboats are used to move completely against the wind in front of them, that is – [12th BCS]

(a) The reaction is used instead of the verb
(b) The force fraction is kept effective in the forward direction
(c) Control of the tension in the sail ropes by effecting the wind in particular directions
(d) A flock-shaped technique can be used

Answer : (b) The force fraction is kept active in the forward direction

BCS : An object completely immersed in water remains where it can be placed in water, because- [12th BCS]

(a) Density of matter is greater than density of water
(b) Density of matter is less than density of water
(c) Density of matter is same as density of water
(d) There is a relationship between density of matter and water

Answer : (c) Density of matter is equal to density of water

BCS : Cooking utensils are generally made of aluminum mainly due to- [12th BCS]

(a) It is light and cheap in cost
(b) It is available in all countries
(c) It has rapid heat transfer and cooks food quickly
(d) It does not break easily and can withstand high heat

Answer : (c) It has rapid heat transfer and cooks the food quickly