1. Which among the following is not a device to measure mass?
2. Assertion(A): The scientifically correct expression is “ The mass of the bag is 10 kg” Reason (R): In everyday life, we use the term weight instead of mass.
3. The main scale reading while measuring the thickness of a rubber ball using Vernier Caliper is 7 cm and the Vernier scale coincidence is 6. Find the radius of the ball.
4. The area under velocity-time graph represents the
5. An object travels 16 m in 4 s and then another 16 m in 2 s. What is the average speed of the object?
6. When a body starts from rest, the acceleration of the body after 2 second in ………………. of its displacement.
7. Assertion (A): Pascal’s law is the working principle of a hydraulic lift. Reason (R): Pressure is thrust per unit area.
8. Clouds float in atmosphere because of their low ……………. .
9. Potential near a charge is the measure of its ………… to bring a positive charge at that point.
10. Resistance of a wire depends on
11. The part of the AC generator that passes the current from the armature coil to the external circuit is
12. A conductor of length 50 cm carrying a current of 5 A is placed perpendicular to a magnetic field of induction 2 × 10– 3 T. Find the force on the conductor.
13. The unit of magnetic flux density is
14. A ray of light passes from one medium to another medium. Refraction takes place when angle of incidence is …………..
15. Two cylindrical rods of same length have the area of cross-section in the ratio 2:1. If both the rods are made up of same material, which of them conduct heat faster?
16. How much boiling water at 100°C is needed to melt 2 kg of ice so that the mixture which is all water is at 0°C?
17. A musical instrument is producing continuous note. This note cannot be heard by a person having a normal hearing range. This note must then be passing through ………….
18. A man fires a gun and hears its echo after 5 s. The man then moves 310 m towards the hill and fires his gun again. If he hears the echo after 3 s, calculate the speed of sound.
19. Who proposed the heliocentric model of the universe?
20. The separation of denser particles from lighter particles done by rotation at high speed is called ………………..
21. ………… is essential to perform separation by solvent extraction method.
22. Among the following the odd pair is ………………
23. The number of protons, neutrons and electrons present respectively in 35Br
24. If Dobereiner is related with ‘law of triads’, then Newlands is related with ……………………
25. Modem periodic law states that the physical and chemical properties of elements are the periodic functions of their ……………
26. Sodium having atomic number 11, ready to ………….. electron/ electrons to attain the nearest Noble gas electronic configuration.
27. The element that would form anion by gaining electrons in a chemical reaction is …………………
28. Zn + 2HCl ➝ ZnCl2 + ………….. ↑
29. Plastics made of Polycarbonate (PC) and Acrylonitrile Butadiene Styrene (ABS) are made of resin code ………………
30. Radiochemistry deals with ……………….
31. Mesoglea is present in …………………
32. Water vascular system is found in ……………………….
33. Poikilothermic organisms are ……………………….
34. Companion cells are closely associated with ……………………..
35. Aerenchyma is found in ……………………
36. Nerve cell does not contain ………………………
37. A big tree falls in a forest but its roots are still in contact with the soil. The branches of this fallen tree straight up. This happens in response to ……………………
38. A growing seedling is kept in the dark room. A burning candle is placed near it for a few days. The tip part of the seedling bends towards the burning candle. This is an example of ……………….
39. The root of the plant is ……………. (i) positively phototropic but negatively geotropic (ii) positively geotropic but negatively phototropic (iii) negatively phototropic but positively hydrotropic (iv) negatively hydrotropic but positively phototropic
40. Assertion: Urea is excreted out through the kidneys Reason: Urea is a toxic substance.
41. To prevent the entry of food into the trachea, the opening is guarded by
42. The physician who discovered that Scurvy can be cured by ingestion of citrus fruit is …………….
43. Food and Adulteration Act was enacted by the Government of India in the year ………………..
44. An internal factor responsible for spoilage of food is ………………..
45. One of the means of indirect transmission of disease is ………………….
46. The primary organ infected during tuberculosis is …………………..
47. The organ affected by jaundice is …………………
48. The production and management of fish is called ……………..
49. Which one of the following is an Italian species of honey bee?
50. Increased amount of …………….. in the atmosphere, results in greenhouse effect and global warming.
