Educational Website
(a) Density of matter is greater than density of water
(b) Density of matter is less than density of water
(c) Density of matter is same as density of water
(d) There is a relationship between density of matter and water
Answer : (c) Density of matter is equal to density of water
(a) 75 dB
(b) 90 dB
(c) 105 dB
(d) 120 dB
Answer : (c) 105 dB
(a) Total reflection
(b) Refraction
(c) Diffusion
(d) Polarization
Answer : (b) Refraction
(a) It is light and cheap in cost
(b) It is available in all countries
(c) It has rapid heat transfer and cooks food quickly
(d) It does not break easily and can withstand high heat
Answer : (c) It has rapid heat transfer and cooks the food quickly
(a) Air is a compound substance
(b) Air is an elemental substance
(c) Air is a mixed substance
(d) Air contains oxygen and nitrogen
Answer : (c) Air is a mixed substance
(a) Atoms break apart to create enormous energy
(b) Multiple atoms join to form new atoms
(c) Heavy atoms break down to form light atoms
(d) One atom splits to form two atoms
Answer : (b) Multiple atoms combine to form new atoms
(a) When the charge is stored in the numerous water particles/ice particles in the cloud
(b) When two cloud particles collide
(c) If electric cells are formed in clouds
(d) When the cloud becomes electrically conductive
Answer : (a) When the charge is stored in the numerous water particles/ice particles in the cloud
(a) Sun and Moon are at right angles to the Earth
(b) Moon is closest to Earth
(c) Earth is closest to the Sun
(d) Sun, Moon and Earth lie in the same straight line
Answer : (d) Sun, Moon and Earth are in the same straight line
(a) (√2+√3)/2
(b) (√2.√3)/2
(c) 1.5
(d) 1.8
Answer : (c) 1.5
(A) 72 : 105
(B) 72 : 35
(c) 35 : 72
(D) 105 : 72
Answer: (c) 35 : 72