A. Hydrogen
B. Nitrogen
C. Oxygen
D. Carbon dioxide
Submitted by: ABDUL HAYEE
Related Mcqs:
- Which one of the following wavelengths of light is most effective in photosynthesis?
A. Blue
B. Green
C. Orange
D. YellowSubmitted by: Malik Asghar Hussain
- The source of oxygen in photosynthesis is
A. water
B. salts
C. minerals
D. glucose - In night, when photosynthesis is stopped, plants__________?
A. take in Carbon Dioxide
B. give off Oxygen
C. give off Carbon Dioxide
D. None of these - In which part of the Plant does photosynthesis take place?
A. Flowers
B. Roots
C. Stem
D. LeavesSubmitted by: ABDUL HAYEE
- Which one of the following gases is readily soluble in water at room temperature?
A. Chlorine
B. Nitrogen
C. Ammonia
D. Carbon dioxideSubmitted by: ABDUL HAYEE
- Which of the following mixture of gases is required in gas welding?
A. Oxygen and ethylene
B. Oxygen and hydrogen
C. Acetylene and oxygen
D. Acetylene and hydrogenSubmitted by: Ashfaque Ali Khoso
- Which of the following noble gases is abundant in air?
A. Neon
B. Helium
C. Argon
D. MethaneSubmitted by: Malik Asghar Hussain
- Which of the following noble gases is not present in atmosphere?
A. Argon
B. Helium
C. Radon
D. XenonSubmitted by: Malik Asghar Hussain
- Brass gets discoloured in air because of the presence of which of the following gases in air ________ ?
A. Carbon dioxide
B. Oxygen
C. Nitrogen
D. Hydrogen sulphideSubmitted by: Rashid Mehmood
- One gram of carbohydrates give energy of the amount?
A. 2 K Calories
B. 4.1 K Calories
C. 6.3 K Calories
D. 8.0 K CaloriesSubmitted by: Ashfaque Ali Khoso
