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- 1. Multiple Choice
In a chemical reaction between sulphuric acid and barium chloride solution the white precipitates formed are of:
Hydrochloric acid
Barium sulphate
Chlorine
Sulphur
- 2. Multiple Choice
The respiration process during which glucose undergoes slow combustion by combining with oxygen in the cells of our body to produce energy, is a kind of:
Exothermic process
Endothermic process
Reversible process
Physical process
- 3. Multiple Choice
A chemical reaction does not involve:
Formation of new substances having entirely different properties than that of the reactants
Breaking of old chemical bonds and formation of new chemical bonds
Rearrangement of the atoms of reactants to form new products
Changing of the atoms of on element into those of another element to form new products
- 4. Multiple Choice
One of the following processes does not involve a chemical reaction. That is:
Melting of candle wax when heated
Burning of candle wax when heated
Digestion of food in our stomach
Ripening of banana
- 5. Multiple Choice
It is necessary to balance a chemical equation in order to satisfy the law of:
Conservation of motion
Conservation of momentum
Conservation of energy
Conservation of mass
- 6. Multiple Choice
All the methods mentioned below can be used to prevent the food from getting rancid except:
i. Storing the food in the air-tight containers
ii. Storing the food in refrigerator
iii. Keeping the food in clean and covered containers
iv. Always touching the food with clean hands
(i) and (ii)
(i) and (iii)
(i), (iii) and (iv)
(iii) and (iv)
- 7. Multiple Choice
Rusting of iron involves a chemical reaction which is a combination of:
Reduction as well as combination reactions
Oxidation as well as combination reactions
Reduction as well as displacement reactions
Oxidation as well as displacement reactions
- 8. Multiple Choice
When ferrous sulphate is heated strongly it undergoes decomposition to form ferric oxide as a main product accompanied by a change in colour from:
Blue to green.
Green to blue.
Green to brown.
Green to yellow.
- 9. Multiple Choice
Which of the following gases is used in the storage of fat and oil containing foods for a long time?
Carbondioxide gas
Nitrogen gas
Oxygen gas
Neon gas
- 10. Multiple Choice
The neutralization reaction between an acid and a base is a type of:
Double displacement reaction
Displacement reaction
Displacement reaction
Decomposition reaction
- 11. Multiple Choice
Which of these is not a raw material for photosynthesis
CO2
H2O
O2
NONE OF THESE
- 12. Multiple Choice
The process of digestion in human begin in
STOMACH
INTESTINE
MOUTH
NONE
- 13. Multiple Choice
Photosynthesis is:
Trapping energy of sunlight to form glucose.
Synthesis of photosensitive compounds.
Oxidation of glucose
Oxidation of carbon dioxide
- 14. Multiple Choice
Saliva contains an enzyme which degrades starch into simple sugar. The enzyme is
Salivary Amylase
Pepsin
Trypsin
None
- 15. Multiple Choice
Hydrochloric acid is secreted by
Pancrease
Small intestine
Liver
Gastric glands of the stomach
- 16. Multiple Choice
Role of bile juice is
Digestion of fat
Emulsification of fat
Digestion of starch
None
- 17. Multiple Choice
Trachea/windpipe contain ‘c’ shaped cartilaginous ring. The function of this ring is to-----
Trap pathogen
Prevent collapse of trachea
Trap Dust and mites
None
- 18. Multiple Choice
Arteries carry oxygenated blood. The only artery that carries deoxygenated blood is…
a. b. c. d.
Carotid artery
Pulmonary Artery
Renal artery
none.
- 19. Multiple Choice
The functional unit of a kidney is…
Glomerulus
Nephron
PCT
DCT.
- 20. Multiple Choice
Insulin secreted by
Liver
Pancreas
Adrenal gland
Thyroid gland
- 21. Multiple Choice
Focal length of plane mirror is
a. At infinity
b. Zero
c. Negative
d. None of these
- 22. Multiple Choice
A concave mirror gives real, inverted and same size image if the object is placed
a. At F
b. At infinity
c. At C
d. Beyond C
- 23. Multiple Choice
Power of the lens is -40, its focal length is
a. 4m
b. -40m
c. -0.25m
d. -25m
- 24. Multiple Choice
In optics an object which has higher refractive index is called
a. Optically rarer
b. Optically denser
c. Optical density
d. Refractive index
- 25. Multiple Choice
The optical phenomena, twinkling of stars, is due to
a. Atmospheric reflection
b. Total reflection
c. Atmospheric refraction
d. Total refraction
- 26. Multiple Choice
Convex lens focus a real, point sized image at focus, the object is placed
a. At focus
b. Between F and
c. At infinity
d. At 2F
- 27. Multiple Choice
. A man finds it difficult to read the odometer on the dashboard of the car but is able to clearly read a distant road sign. Which of the following statement is correct about this man?
a) The near point of his eyes has receded away.
.
(b) The near point of his eyes has come closer to him.
(c) The far point of his eyes has receded away
. (d) The far point of his eyes has come closer to him.
- 28. Multiple Choice
When a beam of white light falls on a glass prism, the colour of light which will deviate least is:
(a) Violet
(b) Red
(c) Green
d) Blue
- 29. Multiple Choice
. The star appear shifted from their actual position due to the phenomenon of
light
(a) Diffraction of light
(b) Scattering of light
c) Refraction of light
(d) Reflection of
- 30. Multiple Choice
Figure a, b, c respectively; indicate the point in case of:
(a) The Hypermetropia eye, the myopic eye and normal eye
(b) The normal eye, the myopic eye and Hypermetropia eye
(c) The normal eye, the Hypermetropia eye and myopic eye
(d) The myopic eye, the normal eye and Hypermetropia eye
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