Font size
WorksheetsPhysics
Total questions: 15
Worksheet time: 8mins
10. Which gas is produced when sodium reacts with water?
(a) Oxygen
(b) Hydrogen
(c) Nitrogen
(d) Carbon dioxide
9. Which metal does not react with dilute hydrochloric acid to produce hydrogen gas?
(a) Zinc
(b) Copper
(c) Aluminium
(d) Magnesium
8. Which salt is formed by the neutralization of sodium hydroxide with hydrochloric acid
(a) Sodium carbonate
(b) Sodium chloride
(c) Sodium bicarbonate
(d) Sodium nitrate
7. The pH of a solution is 9. What is its nature?
(a) Neutral
(b) Acidic
(c) Basic
(d) Amphoteric
6. Which gas is evolved when dilute hydrochloric acid reacts with zinc?
(a) Oxygen
(b) Hydrogen
(c) Carbon dioxide
(d) Nitrogen
5. The SI unit of electric charge is (a) .
4. The force acting per unit area on a surface is called (a) .
3. The inertia of an object depends on its:
(a) Shape
(b) Mass
(c) Speed
(d) Volume
2. A car accelerates uniformly from 20 m/s to 40 m/s in 5 seconds. What is the acceleration?
(a) 4 m/s²
(b) 6 m/s²
(c) 8 m/s²
(d) 10 m/s²
1.If a body is moving with a uniform velocity, its acceleration is:
(a) Positive
(b) Negative
(c) Zero
(d) Cannot be determined
The blue colour of the sky is because
red light is absorbed
blue light is preferentially scattered
blue is the natural colour of sky
red light is preferentially scattered
We can see a rainbow on a sunny day when you look at the sky through a waterfall or through a water fountain
with the Sun in front of you
with the Sun behind you
) with the Sun overhead
just after the sunset
A student studies that convex mirror always forms virtual image irrespective of its position. What causes the convex mirror to always form a virtual image?
Because the reflected ray never intersect.
Because the incident ray traces its path back along the principal axis
Because the incident ray of a convex mirror gets absorbed in the mirror
Because the reflected ray converges at a single point.
Sunil conducts an activity using an object of height 10 cm and a convex mirror of focal length 20 cm. He placed the object at a distance of 20 cm in front of the mirror. What is likely to be height of the image produced?
– 5 cm
5 cm
1 cm
20 cm
