1. The number of dry plants in the herbaria found in the Indian Botanical Garden at Kolkata is about...............
2. Which one of the following is not a correct pair in relation to function?
3. What is the temperature at which both the Fahrenheit and the centigrade scales have the same value?
4. The Wood Furniture are coated with which chemical to protect from Termite destruction....................
5. Consider ‘Thalophyta’ in the classification of Plant Kingdom I. This is the largest group of the Plant Kingdom II. The body of the plants in this group are not differentiated into root, stem and leaves. Choose the correct statement.
6. Cellular Respiration in plants takes place as.............
7. According to Buoyant force, When object is immersed in a fluid (liquid or gas), it experiences an apparent loss of weight which is equal to the.............
8. The Electrical cell converts,
9. The Symbol of SI Unit for “Amount of Substance” is..............
10. The instrument used to measure the altitude of an object is........
11. In Agricultural practices, the method of Irrigation in which the water is allowed to enter the field through channels made between the two rows of crops is known as.................
12. The openings in the Leaves, through which the air and water comes out is called as...........
13. The Chemical reaction in which the Heat is evolved as an byproduct is known as................
14. The middle layer in the structure of Skin Tissue is........
15. Consider the following properties I. Its main source is combustion of fuels II. It reacts with hemoglobin in human blood and reduces the affinity of Oxygen with hemoglobin and this may lead to death. Which Gas has the above properties?
16. The World Health Organisation defines adolescence as the period of life between..............
17. Match the following Vitamins and their deficiency disease A. Vitamin A – 1. Beri – Beri B. Vitamin K – 2. Scurvy C. Vitamin B1 – 3. Haemorrhage D. Vitamin C – 4. Nyctalopia
18. A solution turns red litmus blue; its pH is likely to be..........
19. A solution reacts with crushed eggshells to give a gas that turns lime-water milky. The solution contains...............
20. 0 mL of a solution of NaOH is found to be completely neutralized by 8 mL of a given solution of HCl. If we take 20 mL of the same solution of NaOH, the amount HCl solution (the same solution as before) required to neutralize it will be
21. Which one of the following types of medicines is used for treating indigestion?
22. What happens when a solution of an acid is mixed with a solution of a base in a test tube? (i) The temperature of the solution increases (ii) The temperature of the solution decreases (iii) The temperature of the solution remains the same (iv) Salt formation takes place.
23. An aqueous solution turns red litmus solution blue. Excess addition of which of the following solution would reverse the change?
24. During the preparation of hydrogen chloride gas on a humid day, the gas is usually passed through the guard tube containing calcium chloride. The role of calcium chloride taken in the guard tube is to...........
25. Which of the following substance will not give carbon dioxide on treatment with dilute acid?
26. Which of the following is not a mineral acid?
27. Which among the following is not a base?
28. Which one of the following elements exhibit maximum number of valence electrons?
29. Which of the following gives the correct increasing order of the atomic radii of O, F and N?
30. Which among the following elements has the largest atomic radii?
31. Which of the following elements would lose an electron easily?
32. Which of the following elements does not lose an electron easily?
33. Which of the following are the characteristics of isotopes of an element? (i) Isotopes of an element have same atomic masses (ii) Isotopes of an element have same atomic number (iii) Isotopes of an element show same physical properties (iv) Isotopes of an element show same chemical properties
34. Carbon exists in the atmosphere in the form of...............
35. Which of the following statements are usually correct for carbon compounds? These (i) are good conductors of electricity (ii) are poor conductors of electricity (iii) have strong forces of attraction between their molecules (iv) do not have strong forces of attraction between their molecules.
36. A molecule of ammonia (NH3 ) has :
37. Buckminsterfullerene is an allotropic form of............
38. The ability of metals to be drawn into thin wires is known as
39. . If salivary amylase is lacking in the saliva, which of the following events in the mouth cavity will be affected?
40. The inner lining of the stomach is protected by one of the following from hydrochloric acid. Choose the correct one
41. Which part of alimentary canal receives bile from the liver?
42. A few drops of iodine solution were added to rice water. The solution turned blue-black in colour. This indicates that rice water contains.................
43. In which part of the alimentary canal food is finally digested?
44. Choose the function of the pancreatic juice from the following A. trypsin digests proteins and lipase carbohydrates B. trypsin digests emulsified fats and lipase proteins C. trypsin and lipase digest fats D. trypsin digests proteins and lipase emulsified fats
45.Magnification produced by a rear view mirror fitted in vehicles...................
46. Which one of the following metals does not react with cold as well as hot water?
47. A full-length image of a distant tall building can definitely be seen by using................
48. The laws of reflection hold good for.............
49. In which of the following, the image of an object placed at infinity will be highly diminished and point sized?
50. Under which of the following conditions a concave mirror can form an image larger than the actual object?
