MCQOPTIONS
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MCQOPTIONS
This section includes 255 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge (GK) knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
The branch of physics which deals with the study of fluids in motion is called |
| A. | dynamics |
| B. | hydrostatics |
| C. | hydrodynamics |
| D. | none of these |
| Answer» D. none of these | |
| 152. |
The physical state of water at 100 C is |
| A. | solid |
| B. | liquid |
| C. | gas |
| D. | plasma |
| Answer» D. plasma | |
| 153. |
Which of the following is not a chemical reaction? |
| A. | Souring of milk |
| B. | Rusting of iron |
| C. | Dissolution of sugar in water |
| D. | Digestion of food in our body |
| Answer» D. Digestion of food in our body | |
| 154. |
Which one of the following is not correct about cathode rays? |
| A. | They are deflected to the positive plate of electromagnetic field |
| B. | The nature of cathode rays does not depend upon the nature of gas taken in the discharge tube |
| C. | The nature of cathode rays depends upon the nature of gas taken in the discharge tube |
| D. | Cathode rays are made up of material particles |
| Answer» D. Cathode rays are made up of material particles | |
| 155. |
Which one of the following statements is not correct? |
| A. | All metals are solid at room temperature |
| B. | All metals are good conductor of heat and electricity |
| C. | All metals from basic oxides |
| D. | All metals possess luster when freshly prepared |
| Answer» B. All metals are good conductor of heat and electricity | |
| 156. |
Which of the following is not an endocrine gland? |
| A. | Salivary gland |
| B. | Pituitary gland |
| C. | Thyroid gland |
| D. | Adrenal gland |
| Answer» B. Pituitary gland | |
| 157. |
In case of uniform circular motion, which of the following physical quantity do not remain constant? |
| A. | Speed |
| B. | Momentum |
| C. | Kinetic energy |
| D. | Mass |
| Answer» C. Kinetic energy | |
| 158. |
Typical lub-dub sound heard in heartbeat are due to |
| A. | closing of bicuspid and tricuspid valves |
| B. | closing of semilunar valves |
| C. | closure of bicuspid-tricuspid valves followed by semilunar valves |
| D. | blood under pressure through aorta |
| Answer» D. blood under pressure through aorta | |
| 159. |
Waves produced by supersonic jet planes are |
| A. | shock waves |
| B. | seismic waves |
| C. | infrasonics |
| D. | none of these |
| Answer» B. seismic waves | |
| 160. |
Who first proposed that light was wave-like in character? |
| A. | Huygens |
| B. | Newton |
| C. | Young |
| D. | Maxwell |
| Answer» B. Newton | |
| 161. |
A pulse is a wave |
| A. | of high duration |
| B. | of short duration |
| C. | which travels in vacuum only |
| D. | which travels in solids only |
| Answer» C. which travels in vacuum only | |
| 162. |
Phagocytosis and pinocytosis are collectively termed as |
| A. | endocytosis |
| B. | suspension feeding |
| C. | omnivores |
| D. | mucous trap |
| Answer» B. suspension feeding | |
| 163. |
The most essential organ for fertilization is |
| A. | juicy fruit |
| B. | green sepals |
| C. | coloured petals |
| D. | mature ovule |
| Answer» E. | |
| 164. |
A boat full of iron nails is floating on water in a lake. When the iron nails are removed, the water level |
| A. | rises |
| B. | falls |
| C. | remains the same |
| D. | nothing can be said |
| Answer» C. remains the same | |
| 165. |
One of the most resistant known biological material is |
| A. | lignin |
| B. | hemicelluloses |
| C. | sporopollenin |
| D. | lignocelluloses |
| Answer» D. lignocelluloses | |
| 166. |
A body which allows most of the light to pass through it is called a |
| A. | transparent body |
| B. | opaque body |
| C. | translucent body |
| D. | none of these |
| Answer» B. opaque body | |
| 167. |
Work done upon a body is |
| A. | a vector quantity |
| B. | a scalar quantity |
| C. | always positive |
| D. | always negative |
| Answer» C. always positive | |
| 168. |
The narrowest and most numerous tubes of lungs are termed as |
| A. | bronchus |
| B. | alveoli |
| C. | bronchioles |
| D. | hilum |
| Answer» D. hilum | |
| 169. |
The light which refracts most while passing through a prism is |
| A. | red |
| B. | violet |
| C. | indigo |
| D. | yellow |
| Answer» C. indigo | |
| 170. |
Ohm s law is true |
| A. | for gases at low temperature |
| B. | for metallic conductor |
| C. | for electrolytes when current passes through them |
| D. | for diode when current flows |
| Answer» C. for electrolytes when current passes through them | |
| 171. |
The middle vascular coat that darkens the eye chamber and prevents refraction by absorbing the light rays is |
| A. | choroid |
| B. | sclera |
| C. | retina |
| D. | cornea |
| Answer» B. sclera | |
| 172. |
Two rods of same material and length have their electric resistance to ratio 1 : 2. When both rods are dipped in water, the correct statement will be |
| A. | A has more loss of weight |
| B. | B has more loss of weight |
| C. | Both have same loss of weight |
| D. | Loss of weight will be in the ratio 1 : 2 |
| Answer» D. Loss of weight will be in the ratio 1 : 2 | |
| 173. |
A rider on horse back falls when horse starts running all of a sudden because |
| A. | rider is taken back |
| B. | rider is suddenly afraid of falling |
| C. | inertia of rest keeps the upper part of body at rest whereas lower part of the body moves forward with the horse |
| D. | None of the above |
| Answer» D. None of the above | |
| 174. |
The upward force acting on the body immersed in a fluid is called |
| A. | hydrostatic pressure |
| B. | buoyant force |
| C. | true weight |
| D. | net force |
| Answer» C. true weight | |
| 175. |
The law which defines force is |
| A. | Newton s third law of motion |
| B. | Newton s first law of motion |
| C. | Newton s second law of motion |
| D. | Newton s law of gravitation |
| Answer» C. Newton s second law of motion | |
| 176. |
The buoyant force depends on |
| A. | depth of a liquid |
| B. | colour of a liquid |
| C. | density of liquid |
| D. | none of these |
| Answer» D. none of these | |
| 177. |
A particle is projected up with an initial velocity of 80 ft/s. The ball will attain height of 96 ft/s from the ground after |
| A. | 2.0 and 3.0 s |
| B. | Only at 3.0s |
| C. | Only at 2.0 s |
| D. | After 1 and 2 s |
| Answer» B. Only at 3.0s | |
| 178. |
The process of the escape of liquid from the tip of uninjured leaf or through hydathodes is called |
| A. | transpiration |
| B. | guttation |
| C. | evapo-transpiration |
| D. | evaporation |
| Answer» C. evapo-transpiration | |
| 179. |
Seeds are called the products of sexual reproduction due to |
| A. | it gives rise to new plants |
| B. | formation by fusion of pollen tubes |
| C. | it can survive for longer periods |
| D. | are formed by fusion of gametes |
| Answer» E. | |
| 180. |
Evaporation of liquid occur at |
| A. | boiling point |
| B. | fixed temperature lower than the boiling point |
| C. | all temperature |
| D. | None of the above |
| Answer» D. None of the above | |
| 181. |
The eye lens contains a watery liquid called the |
| A. | aqueous humour |
| B. | peroxide |
| C. | vitreous humour |
| D. | none of these |
| Answer» B. peroxide | |
| 182. |
The mirror used in automobiles to see the rear field of view is |
| A. | concave |
| B. | convex |
| C. | plane |
| D. | none of these |
| Answer» C. plane | |
| 183. |
Oxygenated blood is carried by |
| A. | pulmonary vein |
| B. | pulmonary artery |
| C. | hepatic portal vein |
| D. | renal vein |
| Answer» B. pulmonary artery | |
| 184. |
Oxygenated bold is carried by |
| A. | pulmonary vein |
| B. | pulmonary artery |
| C. | hepatic portal vein |
| D. | renal vein |
| Answer» B. pulmonary artery | |
| 185. |
Oxygen is transported in blood mainly by |
| A. | leucocytes |
| B. | erythrocytes |
| C. | thromobocytes |
| D. | blood plasma |
| Answer» C. thromobocytes | |
| 186. |
In a closed circulatory system, blood is completely enclosed within |
| A. | the skeleton |
| B. | sinuses |
| C. | vessels |
| D. | hearts |
| Answer» D. hearts | |
| 187. |
The exchange of gases in a mammal takes place is |
| A. | trachea |
| B. | bronchioles |
| C. | bronchi |
| D. | alveoli |
| Answer» E. | |
| 188. |
When the right ventricle of heart contracts, the blood goes to |
| A. | all parts of the body |
| B. | Pulmonary arteries |
| C. | aorta |
| D. | lungs |
| Answer» E. | |
| 189. |
In mammals, oxygenated blood enters the heart at the |
| A. | right atrium |
| B. | left atrium |
| C. | right ventricle |
| D. | left ventricle |
| Answer» C. right ventricle | |
| 190. |
When the light is very bright, |
| A. | the iris makes the pupil expand |
| B. | the iris makes the pupil contract |
| C. | the iris and the pupil remain as they are |
| D. | none of these |
| Answer» C. the iris and the pupil remain as they are | |
| 191. |
Which one of the following is called pacemaker of the heart? |
| A. | SA node |
| B. | AV node |
| C. | Chordae tendinae |
| D. | AV septum |
| Answer» B. AV node | |
| 192. |
Which one of the following crop doesn t required more nitrogen fertilizers? |
| A. | Maize |
| B. | Paddy |
| C. | Clover (Berseem) |
| D. | Sugarcane |
| Answer» D. Sugarcane | |
| 193. |
Hearing is controlled by |
| A. | tyemporal lobes |
| B. | cerebrum |
| C. | hypothalamus |
| D. | parietal lobe |
| Answer» D. parietal lobe | |
| 194. |
During the 19th century, light was considered to be a stream of particles called |
| A. | atoms |
| B. | electrons |
| C. | corpuscles |
| D. | quantas |
| Answer» D. quantas | |
| 195. |
Which one is used for weeding? |
| A. | Insecticides |
| B. | Weedicides |
| C. | Herbicides |
| D. | Pesticides |
| Answer» C. Herbicides | |
| 196. |
The covering of lungs is called |
| A. | pericardium |
| B. | pleural membrane |
| C. | perichondrium |
| D. | peritoneum |
| Answer» C. perichondrium | |
| 197. |
The amount of light entering the eye is controlled by the |
| A. | sclera |
| B. | cornea |
| C. | iris |
| D. | crystalline lens |
| Answer» D. crystalline lens | |
| 198. |
The screen behind the eye lens is called the |
| A. | iris |
| B. | ciliary muscle |
| C. | retina |
| D. | pupil |
| Answer» D. pupil | |
| 199. |
A lens which is thicker in the middles and thinner at the edges is called a _____ lens. |
| A. | convex |
| B. | concave |
| C. | cylindrical |
| D. | none of these |
| Answer» B. concave | |
| 200. |
A lens which is thinner at the middles and thicker at the edges is called a _____ lens. |
| A. | convex |
| B. | concave |
| C. | cylindrical |
| D. | none of these |
| Answer» C. cylindrical | |