Q1. Most of the digestion occurs in which part of alimentary canal of man-
(a) Pancreas
(b) Small intestine
(c) Large intestine
(d) Stomach
Q2. Digestion started in human from-
(a) Rectum
(b) Stomach
(c) Mouth
(d) Intestine
Q3. The bone of the which organ is the longest in the human body?
(a) Spinal cord
(b) Thigh
(c) Rib cage
(d) Ankle-boneS
Q4. Enzymes are essential for body because-
(a) They provide energy
(b) They control nervous system
(c) These are the structural part of body
(d) These are the catalyst of biochemical activity
Q5. The enzyme which takes part in digestion of milk protein-
(a) Pepsin
(b) Trypsin
(c) Renin
(d) None of these
Q6. Ozone layer is mainly found in
(a) Thermosphere
(b) Stratosphere
(c) Troposphere
(d) Mesosphere
Q7. DDT is:
(a) An antibiotic
(b) Non-degradable Waste
(c) Degradable fertilizer
(d) Dichlorodiphenyltrichloroethane
Q8. A fresh egg sinks in pure water whereas it floats in saturated salt water, this is due to
(a) the fluid matter inside the egg shell
(b) the higher density of the pure water
(c) the higher density of the salty water
(d) the egg shell is made up of calcium which is lighter than pure water
Q9. Which is not a biotic factor?
(a) Plants
(b) Animals
(c) Micro-organisms
(d) Rocks
Q10.Rise in water level in ocean is due to-
(a)Melting of ice in polar region
(b)Excess rainfall
(c)Acid rain
(d)None of these
Solutions:
S1. Ans.(b)
S2. Ans.(c)
S3. Ans.(b)
S4. Ans.(d)
S5. Ans.(c)
S6. Ans.(b)
S7. Ans.(d)
S8. Ans.(c)
S9. Ans.(d)
S10. Ans.(a)
