General-Studies Quiz For FCI Phase I 2022- 22nd October

Q1. If an object moves with constant velocity then which one of the following statements is NOT correct?
(a) Its motion is along a straight line
(b) Its speed changes with time
(c) Its acceleration is zero
(d) its displacement increases linearly with time
(e) None of the above

Q2. An object is moving with uniform acceleration a. Its initial velocity is u and after time t its velocity is v. The equation of its motion is v = u + at. The velocity (along y-axis) time (along x-axis) graph shall be a straight line
(a) passing through origin
(b) with x-intercept u
(c) with y-intercept u
(d) with slope u
(e) None of the above

Q3. Which one of the following has maximum inertia?
(a) An atom
(b) A molecule
(c) A one-rupee coin
(d) A cricket ball
(e) None of the above

Q4. Which one of the following is the value of 1 kWh of energy converted into joules?
(a) 1.8 × 106 J
(b) 3.6 × 106 J
(c) 6.0 × 106 J
(d) 7.2 × 106 J
(e) None of the above

Q5. A ball balanced on a vertical rod is an example of
(a) stable equilibrium
(b) unstable equilibrium
(c) neutral equilibrium
(d) perfect equilibrium
(e) None of the above

Q6. Which one of the following statements about gravitational force is NOT correct?
(a) It is experienced by all bodies in the universe
(b) It is a dominant force between celestial bodies
(c) It is a negligible force for atoms
(d) It is same for all pairs of bodies in our universe
(e) None of the above

Q7. Whether an object will float or sink in a liquid, depends on
(a) mass of the object only
(b) mass of the object and density of liquid only
(c) difference in the densities of the object and liquid
(d) mass and shape of the object only
(e) None of the above

Q8. A long jumper runs before jumping because he
(a) covers a greater distance
(b) maintains momentum conservation
(c) gains energy by running
(d) gains momentum
(e) None of the above

Q9. In plants, which one of the following tissues is dead?
(a) Parenchyma
(b) Collenchyma
(c) Sclerenchyma
(d) Phloem
(e) None of the above

Q10. If the angular velocity of the Earth decreases, then
(a) the value of acceleration due to gravity also decreases
(b) the value of acceleration due to gravity increases
(c) the value of acceleration due to gravity remains same
(d) None of the above
(e) None of the above

Solutions

S1.Ans. (a)
Sol. An object has constant velocity means that it is moving along a straight line, and as every second of time goes by, the object travels through the same number of meters.

S2.Ans. (c)
Sol. An object is moving with uniform acceleration a. Its initial velocity is u and after time t its velocity is v. The equation of its motion is v = u + at. The velocity (along y-axis) time (along x-axis) graph shall be a straight line with y-intercept u.

S3.Ans. (d)
Sol. A cricket ball has maximum inertia.

S4.Ans. (a)
Sol. kWh (kilowatt-hour) and Joules are two energy units. 1 watt is defined as 1 joule/second. So if you multiply a watt times seconds, you get Ws which is also a joule. So 1kW is 1000W, and an hour is 60 seconds x 60 minutes. So 1kWh = 3600kWs = 3,600,000Ws = 3,600,000J So 1kWh = 3. 6×10^6J

S5.Ans. (a)
Sol. A ball balanced on a vertical rod is an example of unstable equilibrium.

S6.Ans. (d)
Sol. The gravitational force is a force that attracts any objects with mass. This is called Newton’s Universal Law of Gravitation. The gravitational force on Earth is equal to the force the Earth exerts on you. At rest, on or near the surface of the Earth, the gravitational force equals your weight.

S7.Ans. (c)
Sol. Whether an object will float or sink in a liquid, depends on difference in the densities of the object and liquid.

S8.Ans. (b)
Sol. A long jumper runs before jumping to maintain momentum. This helps in jumping higher and longer because of inertia of motion gained due to the motion.

S9.Ans. (c)
Sol. Sclerenchyma tissues are found in hard parts of plant body, in cortex, pith, hypodermis, in the pulp of fruits. Young cells are living and they have protoplasm. But matured cells becomes dead due to deposition of secondary walls. They give mechanical support, strength and rigidity to the plant body.

S10.Ans. (a)
Sol. If the angular velocity is decreasing, then the angular acceleration points in the opposite direction of the angular velocity. Likewise, if the angular velocity is pointing downward and is increasing, then the angular acceleration also points downward. The faster the change in angular velocity, the greater the angular acceleration. If rate of rotation of earth decreases, then acceleration due to gravity will decrease at points on the surface of earth.