Q. Which one of the following metals is kept immersed in Kerosene oil to protect it and to prevent accidental fire?
1) Calcium
2) Sodium
3) Vanadium
4) Magnesium
Q. Which one of the following substances do silver articles react with, that makes the silver articles black?
1) Sulphur
2) Oxygen
3) Carbon dioxide
4) Phosphorus
Q. When we heat lead nitrate [Pb(NO3)2] in a boiling tube, we observe the emission of brown fumes. Which one of the follow-ing is the brown gas?
1) NO
2) N2O2
3) NO3
4) NO2
Q. Osmosis is the process of movement of water molecules from its -
1) higher concentration to its lower concentration through a cell wall
2) lower concentration to its Jiigher concentration through a fully permeable membrane
3) higher concentration to its lower concentration through a fully permeable membrane
4) higher concentration to its lower concentration tihrough a semi-permeable membrane
Q. Which cell organelles have their own DNA and Ribosomes?
1) Golgi body and Endoplasmic Reticulum
2) Mitochondria and Plastids
3) Lysosome and Golgi body
4) Vacuole and Plastids
Q. A student was doing an experiment on increasing the cell division among plants. She asked her supervisor to suggest the specific plant hormone for the same. Had you been her super-visor, which plant hormone would you suggest?
1) Abscisic acid
2) Gibberellins
3) Cytokinin
4) Auxin
Q. A child receives a tall beautiful plant as a birthday gift from his father with a quiz. The father asked her how she would verify whether this tall plant was the progeny of both the tall parents or one tall and one short parent plant. She could verify this through -
1) cross-pollination
2) self-pollination
3) tissue culture
4) negative propagation
Q. Cell wall is not present in cells of -
1) Bacteria
2) Plants
3) Fungi
4) Humans
Q. The Kaleshwaram Lift Irrigation System, which was in the news recently, is constructed in -
1) Kerala
2) Gujarat
3) Telangana
4) Maharashtra
Q. Which one of the following ships was involved in Mission Sagar- II?
1) INS Shakti
2) INS Vikramaditya
3) INS Kesari
4) INS Airavat
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