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1. Which lens must be used in a spectacle to cure the hyper me logia defect of the eye?
Convex mirror
Convex lens
Concave lens
None of these
2. The red rose seems red because:
It reflects every colour
It does not reflect any colour
It absorbs red in colour
It reflects a red colour
3. Penicillin was first discovered by
Alexander Fleming
Antony van Leeuwenhoek
S. Waksman
Faraday
4. The best medicine to inject into the snake bite case is
Penicillin
Antivenin
Terramycin
Streptomycin
5. Which of the following is a useful organism?
Honey bee
Lac insect
Silkworm
All of the above
6. On heating, the liquid is converted into a gaseous state. This process is called
Sublimation
Evaporation
Diffusion
Vapourisation
7. The chemical formula of a compound represents
The total number of atoms in a molecule of the compound
The number of various atoms in one molecule of the compound
The composition of a molecule of the compound
All of the above
8. The main source of protons are:
Cereals
Fruits and vegetables
Oils
Soybean
9. The father of the green revolution in India is:
Menaka Gandhi
R.S Aggarwal
M.S. Swaminathan
Santosh Yadav
10. Which of the following process does not replenish the soil with nutrients?
Manuring
Crop rotation
Use of fertilizers
Ploughing
11. Who is known as the ‘Father of Biology’?
Faranday
Darwin
Aristotle
Robert hook
12. The correct sequence of taxonomic categories is
Division – family – class – order – genus – species
Division – class – order – family – genus – species
Phylum – order – class – family – genus – species
Class – order – phylum – genus – family – species
13. Which of the following is not a Kharif crop?
Wheat (b) (c)
Clover
Legumes
All of the above
14. Which lens must be used in a spectacle to cure the hyper me logia defect of an eye?
Convex mirror
Convex lens
Concave lens
None of These
15. Cholesterol is related to
Fats
Starch
Molases
Vitamin C
16. The state in which molecular attractions are very least is
Solid
Liquid
Gas
All of the above
17. Intermolecular space is the maximum in
Water (b) (c)
Steam
Ice
All of the above
18. The process of converting solid into liquid on heating called
Evaporation
Condensation
Diffusion
Sublimation
19. Which of the following is not a chemical change?
Rusting of iron
Converting water into ice
Marking curd from milk
Burning of paper
20. In a balanced chemical equation, the reactant side and the product side have the same number of
Atoms
Neutrons
Protons
Electrons
21. Balanced diet should have
Protein 2/5, fat 3/5, carbohydrate 1/5
Protein 3/5, fat 1/5, carbohydrate 2/5
Protein 1/5, fat 1/5, carbohydrate 3/5
Protein 1/2, fat ¾, carbohydrate 1/4
22. Which of the following statements about a balanced chemical equation is not true?
Mass is conserved only
Atoms are conserved only
Molecules are conserved only
All of the above
23. Atomic theory was given by
John Dalton
Neils Bohr
E. Rutherford
J.J Thomson
24. If we open a bottle of perfume, its smell spreads in the entire room within a short time due to the process of
Evaporation
Sublimation
Diffusion
Solution
25. Which out of the following is a heterogeneous mixture?
Milk
Soil
Smoke
All of the above
26. Carbon dioxide is a compound because:
It exists as solid liquid and gas.
It contains hydrogen and oxygen.
It contains two different elements joined by chemical bonds.
It can be split up into simpler substance by chemical means
27. Which of the following is neither an element nor a compound?
Saline water
Carbon dioxide
Mercury
Sodium chloride
28. Atomicity of Aluminium is
1
2
3
4
29. The chemical formula of a compound containing 2 atoms of hydrogen and 1 atom of sulphur is
H2SO4
SO2
H2S
H2O
30. When magnesium is burnt in air. It produces magnesium oxide. The correct chemical reaction is:
Mg +O2 ®MgO
2 2Mg +O ®2MgO
2Mg + 2O®2MgO
2 Mg2 +O ®2MgO
31. Marasmus is likely in children who get
Low – iron diet
Low diet
Low – fat diet
Low – protein diet
32. Citrus fruit is a source of
Vitamin B
Vitamin C
Iodine
Vitamin A
33. Calcium deficiency occurs in the absence of vitamin
D
K
C
A
34. Which of the following sets includes the bacterial disease?
Diphtheria, SARS, Common Cold
Malaria, leprosy, Typhoid
Tetanus, Tuberculosis, Measles
Malaria, Mumps, Swine Flue
35. Electrolyte used in the voltaic cell is:
Sulphuric acid
Phosphoric acid
Nitric acid
Carbonic acid
36. Three resistances of 20 W, 15W and 20W are connected in series, the equivalent resistance will be:
45W
60W
25W
55W
37. The resistance of a conductor ____ with rise in the temperature.
Increases
Decreases
Remains the same
First increases then decreases
38. The wire having a black plastic covering is a
Live wire
Neutral wire
Earth wire
None of These
39. Electromagnets are used in
Electric bells
Telephones
Dynamos
None of These
40. Which of the following diseases is caused by a virus?
Dysentery
T.B
Influenza
Malaria
41. Which of the following animals has a gall bladder?
Lion
Dog
Human
All of these
42. Sodium chloride is a salt of
Weak acid and a weak base
Weak acid and strong base
Strong acid and a strong base
Strong acid and a weak base
43. Which of the following is not an acidic salt?
CuSO4
MgCO3
ZnSO4
NH4NO3
44. Germs entering the body through food are mainly killed in the region of alimentary the canal where pH may reach the level
2
3
9
Infinity
45. The canine tooth is meant for
Biting and cutting
Chewing
Tearing
Grinding
46. The experiment which led to the discovery of proton was performed by
Goldstein
J.J Thomson
Dalton
Rutherford
47. An element has electronic configuration 2,8,3. It will be classified as
Metal
Non-metal
Metalloid
None of these
48. Which of the following is not a mineral acid?
HCl
H2SO4
HNO3
CH3COOH
49. Which of the following acids is present in lemon?
Glycolic acid
Lactic acid
Citrus acid
Tartaric acid
50. Which of the following is not an organic acid?
Tartaric acid
Oxalic acid
Ascorbic acid
Sulphuric acid
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