Which gas plants and trees absorb in daytime?
- (A) Oxygen
- (B) Carbon dioxide
- (C) Hydrogen
- (D) None of these
- (B) Carbon dioxide
Which gas is released from the plants during daytime as a major event?
- (A) Nitrogen
- (B) Oxygen
- (C) Carbon dioxide
- (D) None of these
- (B) Oxygen
Which of the following is a parasitic plant?
- (A) Cuscuta
- (B) Ferns
- (C) Mosses
- (D) None of these
- (A) Cuscuta
How do parasitic plants get their food?
- (A) From the host plant
- (B) From the soil
- (C) From the sunrays
- (D) None of these
- (A) From the host plant
Which of the following gases is used for cooling in air conditioners?
- (A) Ammonia
- (B) Hydrogen
- (C) Freon
- (D) None of these
- (C) Freon
What is the chemical formula of ammonia gas?
- (A) O3
- (B) CO2
- (C) NH3
- (D) None of these
- (C) NH3
Which of the following gases is most toxic for human?
- (A) Carbon dioxide
- (B) Carbon monoxide
- (C) Sulfur dioxide
- (D) None of these
- (B) Carbon monoxide
Which one of the following is the largest consumer of water?
- (A) Wheat
- (B) Sugarcane
- (C) Cotton
- (D) None of these
- (B) Sugarcane
Which of the following is a cash crop?
- (A) Wheat
- (B) Millets
- (C) Rubber
- (D) None of these
- (C) Rubber
Which among the following is an example of cash crop?
- (A) Rice
- (B) Grams
- (C) Cotton
- (D) None of these
- (C) Cotton