16.  The disease diphtheria affects

a

  Lungs

b

 Intestine

c

 Throat

d

 Body joints

Answer & Explanation
Answer : Option C

17.  Which one among the following food crops is not categorized under 'millets'?

a

  Ragi

b

 Wheat

c

 Bajra

d

 Jowar

Answer & Explanation
Answer : Option B

18.  Which of the following is the 'master gland'?

a

  Pancreas

b

 Thymus gland

c

 Master gland

d

 Pineal gland

Answer & Explanation
Answer : Option C

19.  Cholera is caused by

a

  vibrio cholerae

b

 bacterioceoccurs

c

 salmonella

d

 none of these

Answer & Explanation
Answer : Option A

20.  German Silver is an alloy of

a

  Silver, Copper and Aluminium

b

 Silver, Zinc and Nickel

c

 Copper, Silver and Nickel

d

 Zinc, Copper and Nickel

Answer & Explanation
Answer : Option D

21.  According to Avogadro's Hypothesis, the smallest particle of an element or a compound, that can exist independently, is called .

a

  a molecule

b

 a cation

c

 an anion

d

 an atom

Answer & Explanation
Answer : Option A

22.  Monazite is an ore of

a

  thorium

b

 zirconium

c

 iron

d

 titanium

Answer & Explanation
Answer : Option A

23.  Which of the following is not a mixture?

a

  Glass

b

 Graphite

c

 Steel

d

 Aluminium

Answer & Explanation
Answer : Option B

24.  If a bar magnet is broken into two pieces, then

a

  each piece will remain a magnet with north pole at one end and south pole at the other end

b

 one piece will have North Pole on both ends and other piece will have South Pole on both ends

c

 only longer piece will behave as bar magnet

d

 both pieces will lose their magnetism

Answer & Explanation
Answer : Option A

25.  Permanent hardness of water may be removed by the addition of

a

  alum

b

 sodium carbonate

c

 lime

d

 potassium permanganate

Answer & Explanation
Answer : Option B

26.  is a medication used to prevent and to treat malaria in areas where malaria is known to be sensitive to its effects

a

  aspirin

b

 neoprene

c

 chloroquine

d

 isoprene

Answer & Explanation
Answer : Option C

27.  The highest grade and best quality coal is

a

  Lignite

b

 Anthracite

c

 Bituminous

d

 Peat

Answer & Explanation
Answer : Option B

28.  The confirmatory test for HIV virus causing AIDS is:

a

  CDR count

b

 Western blot test

c

 ELISA test

d

 PCR

Answer & Explanation
Answer : Option C

29.  Electric fuse wire is made of alloys because alloys -

a

  Are economical

b

 Have low melting point

c

 Have high melting point

d

 Do not get heated easily

Answer & Explanation
Answer : Option B

30.  Common salt is obtained from seawater by the process of -

a

  Filtration

b

 Evaporation

c

 Sublimation

d

 Crystalization

Answer & Explanation
Answer : Option B

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