Question

MCQ Each question carries 2 mk 1.The process of separating grains from the stalks is called * 2 points (a) handpicking (b) threshing (c) decantation (d) evaporation 2.When no more salt dissolves in water at a particular temperature, then the solution at that temperature is called * 2 points (a) unsaturated (b) saturated (c) supersaturated (d) none of these 3.Mixtures need to be separated because * 2 points (a) to remove undesirable substances (b) to get desirable substances (c) to obtain highly pure substances (d) all of the above 4.Which of the following changes cannot be reversed? * 2 points a) Milk to paneer (b) Cold milk to hot milk (c) Yarn to knitted sweater (d) Wet clothes to dry clothes 5.Which of the following is not a man-made change? * 2 points (a) Change of day and night (b) Burning of fuels (c) Drying of clothes (d) Tearing of paper 6.On heating metal rim * 2 points a) expands (b) contracts (c) depends how much it is heated (d) depends as the type of meted 7.Which one of the steps while burning a candle is not reversible? * 2 points (a) Melting of solid wax (b) liquid wax changes into vapours (c) Wax vapour bums into flame (d) All of these 8.Which is not a part of a leaf? * 2 points (a) Petiole (b) Lamina (c) Veins (d) Nodes 9.Parallel venation is not found in * 2 points (a) sugarcane (b) peepal (c) maize (d) wheat 10.Male reproductive part of flower is * 2 points a) sepals (b) petals (c) stamens (d) pistil 11.Which of the following has fibrous root? * 2 points a) Peas (b) Wheat (c) Radish (d) Neem 12.The process of loss of water by a plant through leaves is called * 2 points (a) evaporation (b) condensation (c) photosynthesis (d) transpiration 13.Which is an example of a shrub? * 2 points (a) Spinach (b) Mango tree (c) Tomato plant (d) Lemon 14.Which one will show a metallic lustre? * 2 points a) Any surface of a metal (b) Freshly cut surface of a metal (c) Freshly cut surface of non-metal (d) Surfaces of all materials 15.Purpose of sorting material into groups is * 2 points (a) to study their properties (b) convenience (c) both (a) and (b) (d) inconvenience 16.Which one of the following is insoluble in water? * 2 points (a) Alcohol (b) Sodium chloride (c) Coconut oil (d) Sugar 17.Choose the opaque object from the following * 2 points (a) Charcoal (b) Air (c) Glass (d) Water 18.Which object shines? * 2 points (a) Plastic toy (b) Cotton shirt (c) Steel spoon (d) Stone piece 19.Leaf venation and type of root is correctly paired in * 2 points a) parallel venation, fibrous roots (b) parallel venation, taproot (c) no relation exists in leaf venation and type of roots (d) reticulate venation, fibrous roots 20.Which is a correct set of parts of a pistil? * 2 points (a) Ovary, style and filament (b) Ovary style and stigma (c) Ovary, anther and filament (d) Filament and anther​

Answer 1

Answer:

1. threshing
2. saturated
3. all of the above
4. Milk to paneer
5. Change of day and night
6. expands
7. Wax vapour bums into flame
8. Nodes
9. peepal
10. stamens
11. Wheat
12. transpiration
13. Lemon
14. Freshly cut surface of a metal
15. both (a) and (b)
16. Coconut oil
17. Charcoal
18. Steel spoon
19. parallel venation, fibrous roots
20. Ovary, style and stigma