Practice Test: General Science- 3 | Science & Technology for UPSC CSE PDF Download

Q1. In calves that consume large quantities of milk, the curdling of milk takes place due to ________ 

The action of rennin

Q2. Which is most important for the growth of children up to the age of 14? 

 Protein

Q3. Roughage, a necessary constituent of diet, consists largely of indigestible ________ 

Carbohydrates such as cellulose and lignin

Q4. What should be given to an athlete for instant energy? 

Carbohydrates

Q5. People who live at high altitudes have rosy cheeks because ________ 

Red cell concentration becomes considerably above the average in response to lowered oxygen pressure

Q6. The route of circulation in the human heart is ________ 

Right auricle-right ventricle-pulmonary artery-lungs-pulmonary veins-left auricle-left ventricles-aorta

Q7. One of the organs that excrete water, fat and various catabolic wastes is the ________ 

Skin

Q8. The numerous minute pores in the epidermis of a leaf are called ________ 

Stomata

Q9. In some plants, water oozes through certain pores that remain permanently open. This phenomenon is called ________ 

Guttation

Q10. From which part of the plant is turmeric, a commonly used colourant and antiseptic, obtained? 

Stem 

Q11. A person will have brown eyes, blue eyes or black eyes depending upon the particular pigments present in the ________ 

Iris

Q12. It is not advisable to sleep under a tree at night because of the ________ 

Release of carbon dioxide

Q13. In case of cardiac arrest, what should be the most primary step? 

Cardiac massage

Q14. The volume of urine produced in an adult human every 24 hours is ________ 

1.5 litre

Q15. The rate at which the heart beats per minute in an adult average ________ 

72

Q16. Once blood clots at a wound, harmful bacteria are prevented from entering by ________ 

Scab formation

Q17. Venous blood is carried to the lungs for oxygenation by the ________ 

Pulmonary arteries

Q18. The fundamental role of root hairs in plant is ________ 

To absorb water and mineral salts from the soil

Q19. Water and minerals salts are translocated in plants in the ________ 

Xylem

Q20. Taxonomy is a science dealing with the ________ 

Identification, nomenclature and classification of all living organisms.

Q21. The widely used antibiotic, penicillin, is produced by _ 

A fungus

Q22. Lichen is considered to be a symbolic association of two living organisms. Which organisms are involved in it? ________

Algae and fungi

Q23. Why does a piece of bread when chewed taste sweet? 

Saliva’s action converts starch into maltose

Q24. Plants absorb nitrates from soil and convert them into _______ 

Free nitrogen

Q25. Plants have ________ while animals lack it. 

Cellulose

Q26. Animal cells have.....while plant cells lack it 

Centriole

Q27. Xerophytes are the plants which grow ________ 

In soils with scant water (deserts)

Q28. ________ is sanguivorous (Blood sucking). 

Leech

Q29. The growth of plants is measured by ________ 

Auxanometer

Q30. The blood-pressure in normal human being is ________ 

80/100 

Q31. ‘Dead hearts’ are produced in ________ 

Sugarcane

Q32. Ontogeny recapitulates phylogeny is the theory of ___ 

Recapitulation

Q33. Winter dormancy is ________ 

Hibernation

Q34. Bronchitis is a disease of ________ 

Respiratory tract

Q35. What is meant by ‘Organ Culture’? 

Maintenance alive of a whole organ, after removal from the organism by partial immersion in a nutrient fluid

Q36. BCG is used to prevent ________ 

Tuberculosis

Q37. The molecules responsible for storing the genetic code are ________ 

DNA

Q38. Test-tube baby means ________ 

Ovum fertilized in test tubes and developed in the uterus

Q39. What is the basic characteristic of antigens? 

They are capable of stimulating the formation of antibodies.

Q40. When White-flowered F1 plants were crossed to pure red-flowered plants, the progeny had all ________ 

Red flowered plant

Q41. In an adult human being, the number of vertebrae is ____

26

Q42. Alimentary canal is usually longer in ________ 

Herbivores

Q43. Seed dormancy is due to ________ 

Abscisic acid

Q44. A bat is ________ 

A mammal

Q45. Human blood has the highest percentage of ________ 

Neutrophils

Q46. Most abundant tissues of our body are ________ 

Muscular

Q47. Normal adult human male has ________ 

14 gm of haemoglobin per 100 gm of blood

Q48. The outer layer of the skin is called ________ 

Epidermis

Q49. Blood does not clot in the absence of Vitamin K because it is ________ 

An essential for the synthesis of prothrombin

Q50. Sleeping on left side is useful because ________

It gives maximum relaxation to the muscles of the right side and keeps the liver warm, relaxed and improves bile secretion.