McqMate
| 201. |
The force which tries to bring the body back to its mean position is called |
| A. | deforming force |
| B. | restoring force |
| C. | gravitational force |
| D. | buoyant force |
| Answer» B. restoring force | |
| 202. |
In which of the following media will sound travel the fastest? |
| A. | solid |
| B. | both solid and liquid |
| C. | liquid |
| D. | gas |
| Answer» A. solid | |
| 203. |
Sound waves in air are _____ waves. |
| A. | longitudinal |
| B. | radio |
| C. | transverse |
| D. | electromagnetic |
| Answer» A. longitudinal | |
| 204. |
Sound waves cannot pass through |
| A. | a solid-liquid mixture |
| B. | an ideal gas |
| C. | a liquid-gas mixture |
| D. | a perfect vacuum |
| Answer» D. a perfect vacuum | |
| 205. |
Out of the following, which frequency is not clearly audible to the human ear? |
| A. | 30 Hz |
| B. | 30,000 Hz |
| C. | 300 Hz |
| D. | 3000 Hz |
| Answer» B. 30,000 Hz | |
| 206. |
The distance between two consecutive crests is L, then the wavelength is given by |
| A. | L/2 |
| B. | 2 L |
| C. | 4 L |
| D. | L |
| Answer» D. L | |
| 207. |
The frequency of a wave is 5 Hz. It refers to (type of wave) |
| A. | ultrasonics |
| B. | microwaves |
| C. | infrasonics |
| D. | radio waves |
| Answer» C. infrasonics | |
| 208. |
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» B. of short duration | |
| 209. |
Sound travels fastest in |
| A. | water |
| B. | steel |
| C. | air |
| D. | kerosene oil |
| Answer» B. steel | |
| 210. |
Which of the following types of waves is different from others? |
| A. | Light waves |
| B. | X-rays |
| C. | Radio waves |
| D. | Sound waves |
| Answer» D. Sound waves | |
| 211. |
Waves produced by supersonic jet planes are |
| A. | shock waves |
| B. | seismic waves |
| C. | infrasonics |
| D. | none of these |
| Answer» A. shock waves | |
| 212. |
Echo is produced due to |
| A. | reflection of sound |
| B. | refraction of sound |
| C. | resonance |
| D. | none of these |
| Answer» A. reflection of sound | |
| 213. |
SONAR is based on the principle of |
| A. | echo |
| B. | resonance |
| C. | reverberation |
| D. | any one of the above |
| Answer» A. echo | |
| 214. |
The audible range of frequency is |
| A. | 20 Hz to 20,000 Hz |
| B. | 40 Hz to 40,000 Hz |
| C. | 60 Hz to 60,000 Hz |
| D. | 10 Hz to 20,000 Hz |
| Answer» A. 20 Hz to 20,000 Hz | |
| 215. |
Which of the following frequencies of sound cannot be heard by human beings? |
| A. | 5 Hz |
| B. | 20 Hz |
| C. | 400 Hz |
| D. | 1000 Hz |
| Answer» A. 5 Hz | |
| 216. |
The mirror used in automobiles to see the rear field of view is |
| A. | concave |
| B. | convex |
| C. | plane |
| D. | none of these |
| Answer» B. convex | |
| 217. |
The mirror used in search lights is |
| A. | concave |
| B. | convex |
| C. | plane |
| D. | none of these |
| Answer» A. concave | |
| 218. |
Shaving mirrors are |
| A. | convex mirrors |
| B. | concave mirrors |
| C. | plane mirrors |
| D. | none of these |
| Answer» B. concave mirrors | |
| 219. |
The laws of reflection are true for |
| A. | the plane mirror only |
| B. | the concave mirror only |
| C. | the convex mirror only |
| D. | all reflecting surfaces |
| Answer» D. all reflecting surfaces | |
| 220. |
When the object is at focus of a concave mirror, the image is formed at |
| A. | focus |
| B. | centre of curvature |
| C. | within focus |
| D. | infinity |
| Answer» D. infinity | |
| 221. |
Which of the following is a non-luminous body? |
| A. | fire |
| B. | sun |
| C. | stars |
| D. | earth |
| Answer» D. earth | |
| 222. |
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» A. transparent body | |
| 223. |
During the 19th century, light was considered to be a stream of particles called |
| A. | atoms |
| B. | electrons |
| C. | corpuscles |
| D. | quantas |
| Answer» C. corpuscles | |
| 224. |
Who first proposed that light was wave-like in character? |
| A. | Huygens |
| B. | Newton |
| C. | Young |
| D. | Maxwell |
| Answer» A. Huygens | |
| 225. |
The screen behind the eye lens is called the |
| A. | iris |
| B. | ciliary muscle |
| C. | retina |
| D. | pupil |
| Answer» C. retina | |
| 226. |
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» A. choroid | |
| 227. |
The amount of light entering the eye is controlled by the |
| A. | sclera |
| B. | cornea |
| C. | iris |
| D. | crystalline lens |
| Answer» C. iris | |
| 228. |
The eye lens is a |
| A. | transparent double-convex lens |
| B. | transparent double-concave lens |
| C. | transparent concavo-convex lens |
| D. | none of these |
| Answer» A. transparent double-convex lens | |
| 229. |
The eye lens contains a watery liquid called the |
| A. | aqueous humour |
| B. | peroxide |
| C. | vitreous humour |
| D. | none of these |
| Answer» A. aqueous humour | |
| 230. |
Long-sightedness is caused by the eyeball being too short. It can be corrected by the use of a |
| A. | convergent lens |
| B. | plane mirror |
| C. | divergent lens |
| D. | none of these |
| Answer» A. convergent lens | |
| 231. |
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» A. convex | |
| 232. |
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» B. concave | |
| 233. |
Which of the following lens is used to minimise hypermetropia? |
| A. | convex lens |
| B. | concave lens |
| C. | cylindrical lens |
| D. | none of these |
| Answer» A. convex lens | |
| 234. |
Most of the refraction of light takes place in the |
| A. | iris |
| B. | cornea |
| C. | pupil |
| D. | retina |
| Answer» B. cornea | |
| 235. |
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» B. the iris makes the pupil contract | |
| 236. |
Who discovered by his experiments with glass prisms that white light consists of seven colours? |
| A. | Newton |
| B. | Faraday |
| C. | Maxwell |
| D. | Young |
| Answer» A. Newton | |
| 237. |
Autosomes in humans are paired in |
| A. | 21 pairs |
| B. | 24 pairs |
| C. | 22 pairs |
| D. | 16 pairs |
| Answer» C. 22 pairs | |
| 238. |
The light which refracts most while passing through a prism is |
| A. | red |
| B. | violet |
| C. | indigo |
| D. | yellow |
| Answer» B. violet | |
| 239. |
The planet having the largest number of satellites amongst the following is |
| A. | Jupiter |
| B. | Saturn |
| C. | Uranus |
| D. | Mars |
| Answer» B. Saturn | |
| 240. |
In the absence of his tone proteins in prokaryotes, the an ioinic charges of each inter nucleotide phosphate in DNA is neutralized by |
| A. | phospholipids |
| B. | polyamines |
| C. | polysaccharides |
| D. | glycelipids |
| Answer» B. polyamines | |
| 241. |
Phagocytosis and pinocytosis are collectively termed as |
| A. | endocytosis |
| B. | suspension feeding |
| C. | omnivores |
| D. | mucous trap |
| Answer» A. endocytosis | |
| 242. |
Which one of the following is called pacemaker of the heart? |
| A. | SA node |
| B. | AV node |
| C. | Chordae tendinae |
| D. | AV septum |
| Answer» A. SA node | |
| 243. |
The life span of human WBCs is normally |
| A. | 12-13 days |
| B. | 80-90 days |
| C. | 100-120 days |
| D. | 20-30 days |
| Answer» A. 12-13 days | |
| 244. |
Oxygenated bold is carried by |
| A. | pulmonary vein |
| B. | pulmonary artery |
| C. | hepatic portal vein |
| D. | renal vein |
| Answer» A. pulmonary vein | |
| 245. |
The reserve food in fungal cell is |
| A. | glucose |
| B. | fructose |
| C. | glycogen |
| D. | starch |
| Answer» C. glycogen | |
| 246. |
Trypanosoma is |
| A. | bacteria |
| B. | fungus |
| C. | algae |
| D. | protozoa |
| Answer» D. protozoa | |
| 247. |
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» D. are formed by fusion of gametes | |
| 248. |
The most essential organ for fertilization is |
| A. | juicy fruit |
| B. | green sepals |
| C. | coloured petals |
| D. | mature ovule |
| Answer» D. mature ovule | |
| 249. |
BCG vaccine is used to protect a child from |
| A. | polio |
| B. | plague |
| C. | dengue |
| D. | tuberculosis |
| Answer» D. tuberculosis | |
| 250. |
Bulliform cells are present in |
| A. | lower epidermis of monocot leaves |
| B. | upper epidermis of monocot leaves |
| C. | dicot stem |
| D. | upper epidermis of dicot leaves |
| Answer» A. lower epidermis of monocot leaves | |
| 251. |
Sebaceous glands are found in |
| A. | dermis of skin of mammals |
| B. | epithelium of intestine of frog |
| C. | epithelium of stomach of frog |
| D. | epidermis of skin mammals |
| Answer» A. dermis of skin of mammals | |
| 252. |
One of the most resistant known biological material is |
| A. | lignin |
| B. | hemicelluloses |
| C. | sporopollenin |
| D. | lignocelluloses |
| Answer» C. sporopollenin | |
| 253. |
Parthenogenesis is a type of |
| A. | sexual reproduction |
| B. | asexual reproduction |
| C. | budding |
| D. | regeneration |
| Answer» B. asexual reproduction | |
| 254. |
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» C. The nature of cathode rays depends upon the nature of gas taken in the discharge tube | |
| 255. |
Cathode rays are produced when high electric voltage is applied to the gas held in a discharge tube at a pressure of about |
| A. | 10-3 atm |
| B. | 10-5 atm |
| C. | 1 atm |
| D. | 100 atm |
| Answer» A. 10-3 atm | |
| 256. |
The electronic configuration of chlorine with atomic number 17 is |
| A. | 2, 8, 7 |
| B. | 2, 9, 6 |
| C. | 2, 10, 7 |
| D. | 2, 9, 9 |
| Answer» A. 2, 8, 7 | |
| 257. |
A divalent cation has 10 electrons and 12 neutrons. The atomic number and mass number of the elements are |
| A. | 12, 24 |
| B. | 10, 12 |
| C. | 11, 25 |
| D. | 8, 12 |
| Answer» A. 12, 24 | |
| 258. |
Isotopes differ in the number of |
| A. | electrons |
| B. | protons |
| C. | neutrons |
| D. | nucleons |
| Answer» C. neutrons | |
| 259. |
The only elements having no neutron is |
| A. | protium |
| B. | deuterium |
| C. | tritium |
| D. | All of these |
| Answer» A. protium | |
| 260. |
-particle are |
| A. | double positive helium nucleus |
| B. | single positive helium nucleus |
| C. | neutral helium atom |
| D. | None of these |
| Answer» A. double positive helium nucleus | |
| 261. |
Neutron was discovered by |
| A. | J J Thomson |
| B. | James Chadwick |
| C. | Goldstein |
| D. | Rutherford |
| Answer» B. James Chadwick | |
| 262. |
Man made synthetic fibre is |
| A. | wool |
| B. | rayon |
| C. | nylon |
| D. | cotton |
| Answer» C. nylon | |
| 263. |
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» A. All metals are solid at room temperature | |
| 264. |
Among metals, the poorest conductor of heat is |
| A. | lead |
| B. | tin |
| C. | bismuth |
| D. | mercury |
| Answer» A. lead | |
| 265. |
The correct order of electrical conductivity is |
| A. | Al > Au > Cu > Ag |
| B. | Cu > Ag > Al > Au |
| C. | Au > Ag > Al > Cu |
| D. | Ag > Cu > Au > Al |
| Answer» D. Ag > Cu > Au > Al | |
| 266. |
Beakers A, B and C contain zinc sulphate, silver nitrate and iron (II) sulphate solutions, respectively. copper pieces are added to each beaker. Blue colour will appear to in case of |
| A. | beaker A |
| B. | beaker B |
| C. | beaker C |
| D. | All the beakers |
| Answer» B. beaker B | |
| 267. |
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» A. 2.0 and 3.0 s | |
| 268. |
A stone is dropped into water from abridge 44.1 m above the water. Another stone is thrown vertically downward 1 s later. Both strike the water simultaneously. What was the initial speed of the second stone? |
| A. | 12.25 m/s |
| B. | 14.75 m/s |
| C. | 16.23 m/s |
| D. | 17.15 m/s |
| Answer» A. 12.25 m/s | |
| 269. |
Which one of the following statements is wrong? |
| A. | Sound travels in straight line |
| B. | Sound travels in the form of waves |
| C. | Sound is a form of energy |
| D. | Sound travels faster in vacuum than in air |
| Answer» D. Sound travels faster in vacuum than in air | |
| 270. |
The process of respiration is concerned with |
| A. | liberation of oxygen |
| B. | liberation of carbon dioxide |
| C. | liberation of energy |
| D. | intake of oxygen |
| Answer» D. intake of oxygen | |
| 271. |
Cyanobacteria are |
| A. | bacteria |
| B. | virus |
| C. | algae |
| D. | fungi |
| Answer» C. algae | |
| 272. |
Which one of the following statements is wrong? |
| A. | Voltmeter should have high resistance |
| B. | Ammeter should have low resistance |
| C. | Ammeter is placed in parallel |
| D. | Voltmeter is placed in parallel across the conductor in a |
| Answer» C. Ammeter is placed in parallel | |
| 273. |
A. The resistance of super conductor is zero. B. The super conductor are used for the transmission of electric power. |
| A. | A and B are true |
| B. | A and B are false |
| C. | A is true and B is false |
| D. | A is false and B is false |
| Answer» C. A is true and B is false | |
| 274. |
The resistivity of a wire |
| A. | increase with the length of the wire |
| B. | decreases with the area of cross-section |
| C. | decreases with the length and increases with the crosssection of a wire |
| D. | None of the above |
| Answer» D. None of the above | |
| 275. |
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» B. for metallic conductor | |
| 276. |
Which of the following is not an endocrine gland? |
| A. | Salivary gland |
| B. | Pituitary gland |
| C. | Thyroid gland |
| D. | Adrenal gland |
| Answer» A. Salivary gland | |
| 277. |
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» C. Both have same loss of weight | |
| 278. |
The temperature of the Sun is measure with |
| A. | platinum thermometer |
| B. | gas thermometer |
| C. | pyrometer |
| D. | vapour pressure thermometer |
| Answer» C. pyrometer | |
| 279. |
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» B. Momentum | |
| 280. |
Inertia is that property of a body by virtue of which the body is |
| A. | unable to change by itself the state, the rest |
| B. | unable to change by itself the state of uniform motion |
| C. | unable to change by itself the direction of motion |
| D. | unable to change by itself the state of rest and of |
| Answer» D. unable to change by itself the state of rest and of | |
| 281. |
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» C. inertia of rest keeps the upper part of body at rest whereas lower part of the body moves forward with the horse | |
| 282. |
A person is standing in a elevator. In which situation, he finds his weight less than actual when |
| A. | the elevator moves upward with constant acceleration |
| B. | the elevator moves downward with constant acceleration |
| C. | the elevator moves upward with uniform velocity |
| D. | the elevator moves downward with uniform velocity |
| Answer» B. the elevator moves downward with constant acceleration | |
| 283. |
When the speed of a moving body is doubled |
| A. | its acceleration is doubled |
| B. | its momentum is doubled |
| C. | its kinetic energy is doubled |
| D. | its potential energy is doubled |
| Answer» B. its momentum is doubled | |
| 284. |
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» C. Dissolution of sugar in water | |
| 285. |
The physical state of water at 100°C is |
| A. | solid |
| B. | liquid |
| C. | gas |
| D. | plasma |
| Answer» C. gas | |
| 286. |
Which of the following characteristics are associated with gaseous state? |
| A. | Definite shape, compressible, fixed volume |
| B. | Incompressible, fixed shape and size |
| C. | No fixed shape and size, highly compressible |
| D. | Fixed shape, incompressible, closely packed |
| Answer» C. No fixed shape and size, highly compressible | |
| 287. |
A gas can be liquefied by |
| A. | lowering the temperature |
| B. | increasing the temperature |
| C. | increasing the pressure |
| D. | increasing the pressure and lowering the temperature |
| Answer» D. increasing the pressure and lowering the temperature | |
| 288. |
The term ‘rancidity’ represents |
| A. | acid rain |
| B. | oxidation of fatty food |
| C. | rottening of fruit |
| D. | fading of coloured clothes in the sun |
| Answer» B. oxidation of fatty food | |
| 289. |
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» C. all temperature | |
| 290. |
Largest part of the brain of human being is called |
| A. | olfactory lobe |
| B. | cerebral hemisphere |
| C. | corpus callosum |
| D. | optic nerve |
| Answer» B. cerebral hemisphere | |
| 291. |
Which part of human brain is more developed in comparison to others? |
| A. | Cerebrum |
| B. | Cerebellum |
| C. | Optic lobes |
| D. | Medulla oblongata |
| Answer» A. Cerebrum | |
| 292. |
Hearing is controlled by |
| A. | tyemporal lobes |
| B. | cerebrum |
| C. | hypothalamus |
| D. | parietal lobe |
| Answer» C. hypothalamus | |
| 293. |
Example of analogy is |
| A. | wings of bird and butterfly |
| B. | limbs of horse and man |
| C. | wings of bat |
| D. | None of the above |
| Answer» A. wings of bird and butterfly | |
| 294. |
Removal of anthers from flowers is the process which is known as |
| A. | emasculation |
| B. | breeding |
| C. | manuring |
| D. | fallowing |
| Answer» A. emasculation | |
| 295. |
Improved variety of paddy (rice) is |
| A. | Ranjit |
| B. | Sonalika |
| C. | Ganga 101 |
| D. | Pusa 215 |
| Answer» B. Sonalika | |
| 296. |
Which one of the following crop doesn’t required more nitrogen fertilizers? |
| A. | Maize |
| B. | Paddy |
| C. | Clover (Berseem) |
| D. | Sugarcane |
| Answer» C. Clover (Berseem) | |
| 297. |
Which one is used for weeding? |
| A. | Insecticides |
| B. | Weedicides |
| C. | Herbicides |
| D. | Pesticides |
| Answer» B. Weedicides | |
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