Parenchyma (i) Phloem (ii) Collenchymas (iii) Sclerenchyma (iv) Stomata : ? : : Exchanging of gas : opening & closing of stomata 23. Protective tissue (i) Guard cell (ii) Thick walls of cells (iii) Epidermis cell (iv) Force : Newton : : Energy : ? 24. Kilogram (i) meter/second (ii) Joules (iii) Meter/second2 (iv) F1 force is required to accelerate 2 kg mass at 5 ms–2 and F2 force is 25. required to accelerate 4 kg mass at 2 metres/sec2 F1 = F2 (i) F1> F2 (ii) F1 < F2 (iii) None of thes (iv) Momentum of a moving body is given by : 26. m v (i) m a (ii) m g (iii) All of above (iv) Weight of a boy on earth is 72 N, what will be his weight on moon? 27. 9 N (i) 18 N (ii) 8 N (iii) 12 N (iv) Which side of box will exert more pressure on table top? 28. A (i) B (ii) Both same pressure (iii) None of these (iv) Weight of an object at polar and at equator 29. Increasing from pole to equator (i) Remain same Decreasing from pole to equator All of them (ii) (iii) (iv) An object will float on fluid only if its density is : 30. Less than fluid (i)
(i) Parenchyma (ii) Phloem (iii) Collenchymas (iv) Sclerenchyma 23. Stomata : ? : : Exchanging of gas : opening & closing of stomata (i) Protective tissue (ii) Guard cell (iii) Thick walls of cells (iv) Epidermis cell 24. Force : Newton : : Energy : ? (i) Kilogram (ii) meter/second (iii) Joules (iv) Meter/second2 25. F1 force is required to accelerate 2 kg mass at 5 ms–2 and F2 force is required to accelerate 4 kg mass at 2 metres/sec2 (i) F1 = F2 (ii) F1> F2 (iii) F1 < F2 (iv) None of thes 26. Momentum of a moving body is given by : (i) m v (ii) m a (iii) m g (iv) All of above 27. Weight of a boy on earth is 72 N, what will be his weight on moon? (i) 9 N (ii) 18 N (iii) 8 N (iv) 12 N 28. Which side of box will exert more pressure on table top? (i) A (ii) B (iii) Both same pressure (iv) None of these 29. Weight of an object at polar and at equator (i) Increasing from pole to equator (ii) Remain same (iii) Decreasing from pole to equator (iv) All of them 30. An object will float on fluid only if its density is : (i) Less than fluid