CDS GENERAL SCIENCE QUIZ 16

Question 1:

In our body involuntary actions are controlled by:

Medulla oblongata

Forebrain

Spinal Cord

Midbrain

Question 2:

Which of the following immunity is present from our birth?

Innate Immunity

Active immunity

Passive immunity

Acquired immunity

Question 3:

Kidneys do not play any significant role in the removal of

Water

Ammonia

Urea

Uric acid

Question 4:

Aluminium surfaces are often anodized .This means the deposition of the layer of-

Chromium oxide

Aluminium oxide

Iron oxide

Zinc oxide

Question 5:

Oxidation involves addition of oxygen or loss of electrons. The harmful effects of oxidation are

Respiration
Photosynthesis
Corrosion
Rancidity

1,2,3

2,3

3,4

1,4

Question 6:

Which of the following separation method is used in diagnostic laboratories for blood and urine tests?

Centrifugation

Separating Funnel

Evaporation

Distillation

Question 7:

A ball of mass 150 g moving with an acceleration 20 m/s²is hit by a force, the force acts on it for 0.1 sec. What will be the impulsive force applied on the ball?

0.3 N-s

0.1 N-s

0.4 N-s

0.5 N-s

Question 8:

Where should an object be placed in front of a convex lens to get a real and enlarged image of the object?

At twice the focal length

At infinity

Between the principal focus and twice the focal length

Beyond twice the focal length

Question 9:

Which of the following is not a vector quantity?

Velocity

Force

Acceleration

Speed

Question 10:

A cricketer can throw a ball to a maximum horizontal distance of 100 m. How much high above the ground can the cricketer throw the same ball?

45 m

50 m

55 m

40 m