Question

SECTION - B
1. Activity based MCQ:
(1x17=17)
23. Crop plants get dissolved nutrients easily from:
(a) Manure (b) Fertilizer (c) both (a) & (b) (c) None
24. The habitats of microorganisms are
(a) Moist soil (6) dirty water(c) Air (d) All of these
25. The process of conversion of sugar into alcohol is
(@) Vaccination (b) Pasteurization(c) Fermentation (d) None of these
26. In which medium, the yeast can breed fastly
(a) Salt solution (6) Sugar solution(c) distilled water (d) All of these
27. The fabrics which soak less water is
(a) synthetic fabric (b) Natural fabric(c) both (a) & (6) (d) None of these
28. Which of these is bad conductor of electricity?
(a) graphite (b) coal(c) gold (d) None
29. Which of these metal can displace the copper from its salt solution?
(a) Gold (b) Copper(c) Zinc (d) None of these
30. When iron nail is put in copper sulphate solution, then there will form
and copper.
(a) Copper sulphate (b) Iron sulphate(c) Zinc sulphate (d) None.
31. Which of these is essential for burning?
(a) Carbon dioxide (b) Nitrogen(c) Oxygen (d) All of these
32. A Combustible substance does not catch fire if its temperature is its ignition temperature
(a) above (b) below(c) more (d) none
33. The animals found in particular area are called
(a) fauna (b) flora(c) both (a) & (b) (d) none
34. Which of these is an example of unicellular animals?
(a) paramecium (b) hydra(c) Ant (d) All of these
36. Name the colouring substance which is used to prepare a mount of onion cell is
(a) Methyl orange (b) Methylene blue(c) Safranin (d) None of these
37. What is the different part of plant cell, which differentiate it from animal cell
(a) Cell wall (b) Cell membrane(c) Nucleus (d) Mitochondria
38. The mode of reproduction in Hydra is
(a) sexual reproduction (b) asexual reproduction(c) both (a) & (b)(d) None of these
39. Budding takes place in
(a) Amoeba (b) Hydra(c) Fist (d) Frog
40. The unit of frequency is
(a)Hertz. B)second. C) length. D) second​

Answer 1

Answer:

23 ( c )

24 ( d )

25.( c )

hope it helps