Every Day Science MCQS 161 TO 180

Every Day Science MCQS 161 TO 180


161.Which one of the following statements is true:

a) Gases do not conduct heat
b) The best conductors are non-metals
c) Conduction currents occur only in liquids
d) A vacuum can not conduct heat
e) None of the statements is true.

162. Ice can be changed to water by:

a) Adding more water molecules
b) Changing the motion of the water molecules
c) Rearranging the atoms in water molecules
d) Destroying the atoms in water molecules
e) None of these

163. The building blocks of elements are called:

a) Atoms
b) Molecules
c) Compounds
d) Isotopes
e) None of these

164. Boiling of an egg is a change which is:

a) Physical
b) Chemical
c) Physiological
d) Morphological
e) None of these

165. The temperature of liquid nitrogen is:

a) -32°C
b) -80°C
c) -100°C
d) -196°C
e) None of these

166. Which one of the following is an alkali?

a) water
b) vinegar
c) lemon juice
d) slaked lime
e) None of these

167. If an alkali is slowly added to an acidic solution, the pH of the acidic solution will:

a) Increase
b) Decrease
c) Increase to 7 and then decrease
d) Decrease to 7 and then increase
e) Will remain same

168. The usual raw material for ceramics, generally found beneath the top soil is?

a) Sand
b) Slit
c) Clay
d) Plaster of Paris
e) Melamine

169. Polyamides are synthetic polymers commonly known as:

a) Synthetic rubber
b) Nylon
c) Cellulose
d) Protein
e) None of these.

170. Telephone was invented in 1876 in America by:

a) Marconi
b) Galileo
c) John Beard
d) Edison
e) Graham Bell.

171. Information can be sent over long distances in the form of:

a) Electrical signals through wires
b) Light signals through optical fibres
c) Radio waves through air
d) Any combination of these three.
e) None of these

172. Information can be stored in:

a) Audio and video cassettes
b) Floppy and compact discs
c) Hard disks
d) Laser and optical disks
e) All of these four

173.Computers can:

a) Add and subtract information only.
b) Add subtract and sort information only.
c) Add subtract sort and classify information.
d) Add and subtract but cannot sort information.
e) Add subtract and sort but cannot classify information.

174.IBM stands for:

a) International Business Machines
b) International Big Machines
c) Interrelated Business Machines
d) Interrelated Big Machines
e) None of these.

175. Chemicals used to kill weeds are called as:

a) Insecticides
b) Fungicides
c) Herbicides
d) Fumigants
e) None of these.

176. The cytoplasm consists of several types of structures, which are called:

a) Protoplasm
b) Nucleus
c) Cytochromes
d) Organelles
e) None of these.

177. The structure of DNA was elaborated by Watson and Crick in:

a) 1909
b) 1923
c) 1945
d) 1953
e) None of these.

178. In a DNA molecules, the rulefor base pairing is:

a) Adenine always bound with thymine and cytosine with guanine
b) Adenine always bound with cytosine and thymine with guanine
c) Adenine always bound with guanine and cytosine with thymine
d) Adenine always bound with uracil and cytosine with guanine
e) None of these.

179. Man belongs to the family:

a) Felidae
b) Hominidae
c) Mammalia
d) Primataceae
e) None of these.

180. Deficiency of vitamin C in human body causes a deficiency disease called:

a) Beriberi
b) Night blindness
c) Rickets
d) Scurvy
e) None of these.

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