1. Which reagent is used to distinguish amines?
A. HNO3B. and Zn HClC. HNO2D. CHCl3 HNO2 HNO2 HNO2 NaNO2 HCl
2. In terms of the change in temperature, which two steps of the Carnot cycle are similar?
A. 1st and 2ndB. 1st and 3rdC. 2nd and 4th stepsD. 3rd and 4th steps st rd nd th
3. How much charge is needed to store in cathode? 27 g Al
A. 1FB. 3FC. 13.5FD. 27F Al3+ + 3e− → Al
4. Antonym of 'Ominous' is -
A. AbundantB. AdeptC. WastefulD. Favorable
5. Which one is not correct?
A. He gas is the most difficult be liquifiedB. The lower the Boyle temperature, the more easily a gas liquefiesC. Below the critical temperature, a gas liquefies upon applying pressureD. Below the inversion temperature, the gas undergoes adiabatic expansion and becomes cold
6. Which one is the largest organelle of cytoplasm in plant cell?
A. RibosomeB. MitochondriaC. LysosomeD. Chloroplast