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

Q1. “Radioactive dating” is a technique which can be used to measure
(a) the age of rocks
(b) composition of rocks
(c) colour of rocks
(d) weight of rocks
(e) All of the above

Q2. Which of the following is not a primary function of a green leaf?
(a) Manufacture of food
(b) Interchange of gases
(c) Evaporation of water
(d) Conduction of food and water
(e) All of the above

Q3. When the distance between the object and the plane mirror increases
(a) the image remains same
(b) the size of the image will become less than the size of the object
(c) the distance between the image and the plane mirror increases
(d) the distance between the image and the plane mirror decreases
(e) All of the above

Q4. Butter paper is an example of –
(a) a transparent
(b) a translucent
(c) an opaque
(d) a luminous
(e) All of the above

Q5. The sun is seen before the actual sun rise because of –
(a) reflection
(b) refraction
(c) scattering of light
(d) rectilinear propagation of light
(e) All of the above

Q6. Neutrophils and lymphocytes originate from
(a) kidney tubule
(b) spleen
(c) bone marrow
(d) lymph node
(e) All of the above

Q7. A mother of blood group O has a group O child. What could be the blood group of father of the child?
(a) Only O
(b) A or B or O
(c) A or B
(d) Only AB
(e) All of the above

Q8. Which of the following part of blood carry out the function of body defence?
(a) Red blood cells
(b) White blood cells
(c) Platelets
(d) Haemoglobins
(e) All of the above

Q9. The rate of change of momentum of a body equal of the resultant:
(a) energy
(b) power
(c) force
(d) impulse
(e) None of the above

Q10. Which of the following are the two main constituents of granite?
(a) Iron and silica
(b) Iron and silver
(c) Silica and aluminium
(d) Iron oxide and potassium
(e) None of the above

Solutions

S1.Ans. (a)
Sol. Radioactive dating is a technique which can be used to measure the age of rocks etc. In this process the half age of radio active is measured and on the basis of the quantity remaining after half the age of the rock, wood etc. is measured.

S2.Ans. (d)
Sol. Green leaf perform important functions which includes manufacturing of food, Interchange of gases and evaporation of water. But it doesn’t include conduction of food and water.

S3.Ans. (c)
Sol. In plane mirror, the image distance always equals the object distance. Therefore, when the distance between the object and the plane mirror increases then the distance between the image and the plane mirror also increases.

S4.Ans. (b)
Sol. Butter paper is a translucent object as it allows light to pass through it partially, thus not providing clear vision. While, a transparent substance allows light to pass through it completely providing a clear vision. Whereas, an opaque substance is impenetrable to light. On the other hand, luminous objects emit their own light.

S5.Ans. (b)
Sol. When the light rays pass through the atmosphere having layers of different densities and refractive indices, then atmospheric refraction takes place. The actual sunrise takes place when the sun is above horizon. When the sun is just below the horizon, the light rays coming from it, on entering the Earth’s atmosphere suffer atmospheric refraction from a rarer to a denser medium, thus, bending towards normal at each refraction. Due to continuous refraction of light rays at each layer, it follows a curved path and reaches the eye of the observer. As a result, we can see the sun 2 min before it rises above the horizon in the morning.

S6.Ans. (c)
Sol. Bone marrow is located within the bone cavities. It is composed of stromal cells and parenchymal cells. Neutrophils and lymphocytes are blood cells which are produced within bone marrow.

S7.Ans. (b)
Sol. The blood group of father of the child could be A or B or O.

S8.Ans. (b)
Sol. White blood cells (WBC) bring out the function of body defence.

S9.Ans. (c)
Sol. Newton’s 2nd Law – The rate of Change of momentum always acts in the direction of resultant force acting on a body = (F = ma) (where m = mass; a = aceeleration).

S10.Ans. (c)
Sol. Silica and aluminium are the two main constituents of granite. Granite contains 70-77% of silica and 11-13% of aluminium in the form of (Al2O3).