631. The part of the body directly affected by Beri Beri disease is(a) Nervous system (b) Epidermal tissue
(c) Respiratory system (d) Bone tissue
Answer: (a)
632. The element Nitrogen is found in
(a) Carbohydrates (b) Fat s
(c) Proteins (d) None of the above
Answer: (c)
633. As the amount of clay in a soil increases, it s water retaining capacity
(a) Decreases (b) Increases
(c) Remains unchanged
Answer: (b)
634. As the number of micro-organisms in a soil increases, the amount of humus in the same soil
(a) Increases (b) Decreases
(c) Remains unchanged (d) None of these
Answer: (a)
635. Which of the following plant s adds more oxygen to the atmosphere than it removes?
(a) Bread mould (b) Corn
(c) Mushroom (d) Y east
Answer: (b)
636. Which of the following blood groups of human beings is a universal donor?
(a) AB (b) A
(c) B (d) O
Answer: (d)
637. It is customary to transfuse blood of the same group as that of the p atient, and only in emergency to give the blood of the donor whose blood group is
(a) O (b) A
(c) B (d) AB
Answer: (a)
638. Haemoglobin in the blood is a complex protein rich in
(a) Copper (b) Gold
(c) Iron (d) Silver
Answer: (c)
639. Haemoglobin is rich in a mineral which has great affinity for
(a) Carbon dioxide (b) Chlorine
(c) Hydrogen (d) Oxygen
Answer: (d)
640. Amino acids are a product of the digestion of
(a) Carbohydrates (b) Fat s
(c) Proteins (d) V itamins
Answer: (c)
641. Which of the following is a st arch digesting enzyme?
(a) Insulin (b) Ptyalin
(c) Lip ase (d) Renin
Answer: (b)
642. Which of the following has the highest fat content?
(a) Milk (b) Pot ato
(c) Rice (d) Sugar
Answer: (a)
643. Which one of the following secretions does not contain enzymes?
(a) Gastric juice (b) Saliva
(c) Pancreatic juice (d) Bile
Answer: (d)
644. Which of the following is the product of digestion of proteins?
(a) Amino acids (b) Alcohol
(c) Carbon dioxide (d) Lactic acid
Answer: (a)
645. Pepsin, a digestive enzyme, is produced in the
(a) Liver (b) Small intestine
(c) Stomach (d) None of the above
Answer: (c)
646. Corn kernels are seeds and contain digestive enzymes which convert starch into
(a) Glucose (b) Glycol
(c) Lactose (d) Sucrose
Answer: (a)
647. The kidneys in the human body
(a) Regulate the water balance in the body
(b) Regulate the concentration of the salt s in the blood and of the reaction (acid-base balance) of the blood
(c) Excrete waste products and any excess of salt s
(d) All of the above
Answer: (d)
648. Which of the following is nearly a complete food by itself‘?
(a) Cheese (b) Milk
(c) Meat (d) Rice
Answer: (b)
649. Which of the following foods (one ounce of edible raw portion of each) provides the largest number of Kcal? Of energy?
(a) Cheese (b) Meat
(c) Margarine (d) Wheat
Answer: (c)
650. If you wish to have the maximum value of in respect of Vitamin D, which of the following would you choose?
(a) Cheese (b) Meal
(c) Milk (s) Rice
Answer: (a)
651. All of the following foods lack vit amin C, except
(a) Cheese (b) Milk
(c) Meat (d) Rice
Answer: (b)
652. Which of the following statements is not correct?
(a) Pepsin is produced in the glands in the lining- of the stomach
(b) Vegetable fats contain enough vitamin A and D
(c) Amino acids are a product of the digestion of proteins
(d) Vitamin C is most plentiful in citrus fruits.
Answer: (b)
653. All of the following statements are correct, except
(a) Proteins are an essential part of living cells
(b) Enzymes help the digestion by chemical means, acting as catalysts speeding up reactions
(c) Bile contains enzymes
(d) Lipase breaks up fats into fatty acids and glycerol
Answer: (c)
654. The vitamin concerned with blood clotting is
(a) Vitamin C (b) Vitamin D
(c) Vitamin A (d) Vitamin K
Answer: (d)
655. When there is a decrease in the concentration of oxygen in the blood, the rate of breathing
(a) Decreases (b) Increases
(c) Does not change
(d) Increases or decreases depending on the density of blood
Answer: (b)
656. The skin is an excretory organ. Which of the following substances is not excretory material?
(a) Oil (b) Urea
(C) Salt s (d) Water
Answer: (a)
657. Camels have greater adaptability to long periods of drought in hot desert s than other animals. This is because
(a) They have a large hump where also they can store water
(b) It s thick fur insulates it s body against high external temperatures and reduces water loss
(c) Camels have a large rumen
(d) Camels can drink very fast, as much as 1/3 of their body weight
Answer: (b)
658.All the following fact s about camels make them adapt to long periods of drought in hot desert s, except
(a) Camels do not sweat until the external temperature rises to about 41°C, which is much higher than for most mammals
(b) Camels can survive a loss of up to 40 for per cent of their body water; for most mammals this limit is 20 per cent
(c) The camel’s thick fur insulates it s body against high temperatures thereby reducing water loss
(d) Camels can drink as much as 1/3 of their body weight in ten minutes, which other mammals cannot
Answer: (d)
659. Babies should be always kept in a reasonably warm temperature
whereas adults can with stand extreme cold. The reason for this is that
(a) They have a large surface area to volume ratio; hence they lose much more heat than they produce
(b) They have a large volume to surface area ratio which result s in loss of body heat greater than they produce
(c) They sweat more than the adults, lowering their body temperature
(d) Their skin is more porous than that of the adult s
Answer: (a)
660. A newly born normal child will thrive best if it is given milk of
(a) Cow (b) Goat
(c) Mother (d) Skimmed milk
<Next Page><01,..... 25, 26, 27, 28, 29, 30, 31, 32, 33, 34>
General Science- Questions and Answers in Malayalam- Click here
Physical Science - Questions and Answers - Click here
Physics - Questions and Answers - Click here
Chemistry - Questions and Answers - Click here
Biology - Questions and Answers - Click here
Zoology - Questions and Answers - Click here
Botany - Questions and Answers - Click here
Every Day Science - Questions and Answers - Click here
PSC TODAYS EXAM RESULTS ---> Click here
PSC EXAM PROGRAMME -> Click here
PSC RANK LISTS / SHORT LISTS -> Click here
PSC FREE MOCK TEST -> Click here
Related Links
10. PSC PREVIOUS / SOLVED QUESTION PAPERS ---> Click here
11. PSC QUESTIONS IN MALAYALAM
* SCERT KERALA TEXT BOOKS FOR CLASS II, IV, VI, VIII, IX, X, XII – FREE DOWNLOAD ---> Click here
* NCERT & CBSE TEXT BOOKS FOR ALL CLASSES – FREE DOWNLOAD ---> Click here
* NCERT & CBSE TEXT BOOKS SOLUTIONS FOR ALL CLASSES ---> Click here
No comments:
Post a Comment