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MCQOPTIONS
This section includes 200950 Mcqs, each offering curated multiple-choice questions to sharpen your General Knowledge knowledge and support exam preparation. Choose a topic below to get started.
| 2151. |
At room temperature the r.m.s. velocity of the molecules of a certain diatomic gas is found to be 1930 m/sec. the gas is? |
| A. | H2 |
| B. | F2 |
| C. | O2 |
| D. | Cl2 |
| Answer» B. F2 | |
| 2152. |
By what percentage should the pressure of a given mass of a gas be increased so as to decrease its volume by 10% at a constant temperature? |
| A. | 8.1% |
| B. | 9.1% |
| C. | 10.1% |
| D. | 11.1% |
| Answer» E. | |
| 2153. |
In 9% stock man invests some money partly at 96 and partly in 12% stock at 120. he must invest the money in the ratio to obtain equal dividends from both? |
| A. | 3:4 |
| B. | 3:5 |
| C. | 4:5 |
| D. | 16:15 |
| Answer» E. | |
| 2154. |
What is annual income derived from Rs. 1800, 5% Stock at 104? |
| A. | 90 |
| B. | 85 |
| C. | 89 |
| D. | 80 |
| Answer» B. 85 | |
| 2155. |
According to kinetic theory of gases, at absolute zero of temperature__. |
| A. | Water freezes |
| B. | Liquid helium freezes |
| C. | Molecular motion stops |
| D. | Liquid hydrogen freezes |
| Answer» D. Liquid hydrogen freezes | |
| 2156. |
The r.m.s velocity of oxygen molecules at 27°C is 318 m/s. The r.m.s velocity of hydrogen molecules at 127°C is? |
| A. | 1470 m/s |
| B. | 1603 m/s |
| C. | 1869 m/s |
| D. | 2240 m/s |
| Answer» B. 1603 m/s | |
| 2157. |
In 10% stock at 96 A invested some money. In an equality good 12% stock if B wants to invest, he must purchase a stock worth of? |
| A. | Rs.50 |
| B. | Rs.105 |
| C. | Rs.115.20 |
| D. | Rs.125.40 |
| Answer» D. Rs.125.40 | |
| 2158. |
An ideal gas is that which can ______. |
| A. | Be solidified |
| B. | Liquefied |
| C. | Not be liquefied |
| D. | Not be solidified |
| Answer» D. Not be solidified | |
| 2159. |
Which of the following properties of gas molecule the one that is same for all ideal gases at a particular temperature is ? |
| A. | Mass |
| B. | Velocity |
| C. | Momentum |
| D. | Kinetic energy |
| Answer» B. Velocity | |
| 2160. |
N molecules, each of mass m, of gas A and 2 N molecules, each of mass 2 m, of gas B are contained in the same vessel which maintained at a temperature T. The mean square of the velocity of molecules of B type is denoted by n2 and the mean square of the X component of the velocity of A type is denoted by w2, then |
| A. | 2 |
| B. | 1 |
| C. | 1/3 |
| D. | 2/3 |
| Answer» E. | |
| 2161. |
Find the brokerage being 1/4% when In Rs.106.25 cash realised on selling a 14% stock? |
| A. | Rs.105.50 |
| B. | Rs.105.90 |
| C. | Rs.106 |
| D. | Rs.113.75 |
| Answer» D. Rs.113.75 | |
| 2162. |
In company which pays 9 % dividend when man buys Rs. 25 shares. At what price did he buy the shares? The money invested is such that it gives 10 % on investment. |
| A. | 11.50 |
| B. | 15.50 |
| C. | 22.50 |
| D. | 25.50 |
| Answer» D. 25.50 | |
| 2163. |
Boyl’s law is applicable in? |
| A. | Isochoric process |
| B. | Isothermal process |
| C. | Isobaric process |
| D. | Isotonic process |
| Answer» C. Isobaric process | |
| 2164. |
Real gases show mark able deviation from that of ideal gas behavior at_____. |
| A. | High temperature and low pressure |
| B. | Low temperature and high pressure |
| C. | High temperature and high pressure |
| D. | Low temperature and low pressure |
| Answer» C. High temperature and high pressure | |
| 2165. |
A gas in a container A is in thermal equilibrium with another gas of the same mass in container B. If we denote the corresponding pressures and volumes by the suffices A and B, then which of the following statement is most likely to be true? |
| A. | PA = PB, VA ¹ VB |
| B. | PA ¹ PB, VA = VB |
| C. | PA VA = PB VB |
| D. | |
| Answer» D. | |
| 2166. |
From 88 shares of Rs. 25 each at 5 premium find the income derived? The rate of dividend being 7(1/2) % per annum and brokerage being (1/4) per share. |
| A. | 150 |
| B. | 165 |
| C. | 180 |
| D. | 201 |
| Answer» C. 180 | |
| 2167. |
Find the cost of 96 shares of Rs. 10 each at (3/4) discount, brokerage being(1/4) per share is? |
| A. | 812 |
| B. | 912 |
| C. | 1012 |
| D. | 1112 |
| Answer» C. 1012 | |
| 2168. |
A gas at a pressure P0 is contained in a vessel. If the masses of all the molecules are halved and their velocities doubled, the resulting pressure P would be equal to ? |
| A. | 4 P0 |
| B. | 2 P0 |
| C. | P0 |
| D. | po/2 |
| Answer» C. P0 | |
| 2169. |
In these option pick out the cash required to purchase Rs. 3200, 7(1/2) % stock at 107(brokerage (1/2) %)? |
| A. | 3440 |
| B. | 4440 |
| C. | 5440 |
| D. | 6440 |
| Answer» B. 4440 | |
| 2170. |
In these option pick out the cash realised by selling Rs. 2440, 9.5% stock at 4 discount (brokerage (1/4) %)? |
| A. | 2198 |
| B. | 2298 |
| C. | 2398 |
| D. | 2498 |
| Answer» C. 2398 | |
| 2171. |
According to kinetic theory of gasses at absolute zero temperature_____. |
| A. | Water freezes |
| B. | Liquid helium freezes |
| C. | Molecules motion stops |
| D. | Liquid hydrogen freezes |
| Answer» D. Liquid hydrogen freezes | |
| 2172. |
If 1 kg of water at its normal boiling point forms 1.671 m3 of steam, the external latent heat of vaporization of water is about (J = 4200nJ/kcal)? |
| A. | 400 kcal/kg |
| B. | 40 kcal/kg |
| C. | 4 kcal/kg |
| D. | 40 cal/kg |
| Answer» C. 4 kcal/kg | |
| 2173. |
In these option pick out the cost of Rs. 4500, 8.5% stock at 4 premium? |
| A. | 4680 |
| B. | 4860 |
| C. | 5240 |
| D. | 5420 |
| Answer» B. 4860 | |
| 2174. |
In these option pick out the cost of Rs. 6400, 10% stock at 15 discount? |
| A. | 5440 |
| B. | 5480 |
| C. | 6440 |
| D. | 6480 |
| Answer» B. 5480 | |
| 2175. |
In these option pick out the cost ofRs. 7200, 8% stock at 90? |
| A. | 3240 |
| B. | 6480 |
| C. | 7280 |
| D. | 9880 |
| Answer» C. 7280 | |
| 2176. |
The internal energy of one mole of an ideal gas depends upon? |
| A. | Volume of gas |
| B. | Temperature of gas |
| C. | Nature of gas |
| D. | Density of gas |
| Answer» C. Nature of gas | |
| 2177. |
For a gas, the r.m.s. speed at 800K is ? |
| A. | Half the value at 200 K |
| B. | Double the value at 200 K |
| C. | Same as at 200 K |
| D. | Four times the value at 200 K |
| Answer» C. Same as at 200 K | |
| 2178. |
If 2 kcal, of heat is supplied to a system cause to change the internal energy of a gas is 5030J, and external work done is 3350 J, then what is mechanical equivalent of heat? |
| A. | 41.90 J/kcal |
| B. | 4190 J/cal |
| C. | 4.19 J/kcal |
| D. | 4.19 J/cal |
| Answer» E. | |
| 2179. |
PV/3 = RT, V represents volume of ? |
| A. | Any amount of gas |
| B. | 2 moles of gas |
| C. | 3 moles of gas |
| D. | 4 moles of gas |
| Answer» D. 4 moles of gas | |
| 2180. |
The difference between the principal specific heats of nitrogen is 300 J/kg-K and ratio of the two specific heats is 1.4 then ? |
| A. | CP = 1050 J/kg-K |
| B. | CP = 750 J/kg-K |
| C. | CP = 650 J/kg-K |
| D. | CP = 150 J/kg-K |
| Answer» B. CP = 750 J/kg-K | |
| 2181. |
Calculate the RMS velocity of molecules of a gas of which the ratio of two specific heats is 1.42 and velocity of sound in the gas is 500 m/s? |
| A. | 727 m/s |
| B. | 527 m/s |
| C. | 927 m/s |
| D. | 750 m/s |
| Answer» B. 527 m/s | |
| 2182. |
Rajinder invests a part of Rs. 12000 in 12% stock at Rs. 120 and the remainder in 15% stock at Rs. 125. If his total dividend per annum is Rs. 1360, how much does he invest in 12% stock at Rs. 120?. [Hotel Mgt 1992] |
| A. | Rs. 4500 |
| B. | Rs. 6000 |
| C. | Rs. 5500 |
| D. | Rs 4000 |
| Answer» E. | |
| 2183. |
At what temperature, the rms speed of gas molecules I half the value at NTP? |
| A. | 68.25 K |
| B. | 273 K |
| C. | 345 K |
| D. | 0 K |
| Answer» B. 273 K | |
| 2184. |
Mass of gas is 300 gm and its specific heat at constant volume is 750J/kg K. If gas is heated through 75°C at constant pressure of 105N/m2, it expands by volume 0.08 ´ 106 cm3. find CP/CV? |
| A. | 1.4 |
| B. | 1.374 |
| C. | 1.474 |
| D. | 1.5 |
| Answer» E. | |
| 2185. |
One mole of ideal gas required 207 J heat to rise the temperature by 10°K when heated at constant pressure. If the same gas is heated at constant volume to raise the temperature by the same 10°K, The heat required is (R = 8/3 J/mole °K) |
| A. | 1987 J |
| B. | ) 29 J |
| C. | 215.3 J |
| D. | 124 J |
| Answer» E. | |
| 2186. |
A gas is taken in a sealed container at 300 K. It is heated at constant volume to a temperature 600 K. the mean K.E. of its molecules is? |
| A. | Halved |
| B. | Doubled |
| C. | Tripled |
| D. | Quadrupled |
| Answer» C. Tripled | |
| 2187. |
The difference between the principal specific heats of nitrogen is 300 J/kg °K and ratio of the two specific heats is 1:4. Then the CP is? |
| A. | 1050 J/kg K |
| B. | 650 J/kg K |
| C. | 750 J/kg K |
| D. | 150 J/kg K |
| Answer» C. 750 J/kg K | |
| 2188. |
The r.m.s. velocity of the molecules in the sample of helium is 5/7ththat of the molecules in the sample of hydrogen. If the temperature of the hydrogen sample is 0°C ,then temperature of helium is ? |
| A. | 0°C |
| B. | 120°C |
| C. | 273°C |
| D. | 100°C |
| Answer» B. 120°C | |
| 2189. |
Latent heat of ice is ? |
| A. | Less than external latent heat of fusion |
| B. | Equal to external latent heat of fusion |
| C. | More then external latent heat of fusion |
| D. | Twice the external latent heat of fusion |
| Answer» D. Twice the external latent heat of fusion | |
| 2190. |
A sandbag in outer space moves at 3 m/s and collides and sticks to a half-as-massive sandbag initially at rest. Compared to the kinetic energy of the moving bag before collision, the kinetic energy of the coupled bags after collision is ? |
| A. | one third |
| B. | two thirds |
| C. | three quarters |
| D. | not enough information to say. |
| Answer» C. three quarters | |
| 2191. |
Two 5000-kg freight cars roll toward each other (one at 1 m/s, the other at 2 m/s) on a level track. Thus before they collide one car's kinetic energy is 2500 J and the other's is 10,000 J. After they collide (and couple together) their total kinetic energy is ? |
| A. | 1250 J |
| B. | 2500 J. |
| C. | 7500 J |
| D. | 12,500 J. |
| Answer» B. 2500 J. | |
| 2192. |
A 1-kg ball dropped from a height of 2 m rebounds only 1.5 m after hitting the ground. The amount of energy converted to heat is about ? |
| A. | 0.5 J. |
| B. | 1.0 J. |
| C. | 2.0 J. |
| D. | more than 2.0 J. |
| Answer» E. | |
| 2193. |
Two 5000-kg freight cars roll toward one another (one at 1 m/s and the other at 2 m/s) on a level track. Thus before they collide one car's kinetic energy is 2500 J and the other's is 10,000 J. They collide and couple together. The amount of kinetic energy turned into heat (mostly warming the couplers) in the collision is ? |
| A. | 1250 J |
| B. | 2500 J |
| C. | 7500 J |
| D. | 11,250 J. |
| Answer» E. | |
| 2194. |
Two 5000-kg freight cars roll without friction (one at 1 m/s, the other at 2 m/s) toward each other on a level track. Thus one car's kinetic energy is 2500 J and the othe's is 10,000 J. Before they collide their total kinetic energy is ? |
| A. | 1250 J |
| B. | 2500 J |
| C. | 7500 J. |
| D. | 12,500 J. |
| Answer» E. | |
| 2195. |
Two 5000-kg freight cars roll without friction (one at 1 m/s, the other at 2 m/s) toward one another on a level track. They collide, couple, and roll away together with a combined momentum of ? |
| A. | zero. |
| B. | 5000 kg m/s |
| C. | 10,000 kg m/s |
| D. | 15,000 kg m/s. |
| Answer» C. 10,000 kg m/s | |
| 2196. |
Two identical freight cars roll without friction towards each other on a level track. One rolls at 2 m/s and the other rolls at 1 m/s. After the cars collide, they couple and roll together with a speed of ? |
| A. | 0.5 m/s. |
| B. | 0.33 m/s |
| C. | 0.67 m/s. |
| D. | none of these. |
| Answer» B. 0.33 m/s | |
| 2197. |
Two identical freight cars roll without friction (one at 1 m/s, the other at 2 m/s) toward one another on a level track. They collide, couple together, and roll away in the direction that ? |
| A. | the slower car was initially going. |
| B. | the faster car was initially going. |
| C. | neither of these -- they stop. |
| D. | both cars was initially going |
| Answer» C. neither of these -- they stop. | |
| 2198. |
A piece of taffy slams into and sticks to another identical piece of taffy that is at rest. The momentum of the two pieces stuck together after the collision is the same as it was before the collision, but this is not true of the kinetic energy, which is partly turned into heat. What percentage of the kinetic energy is turnedinto heat? |
| A. | 0% |
| B. | 25% |
| C. | 50% |
| D. | 75% |
| Answer» D. 75% | |
| 2199. |
A golf ball is thrown at and bounces backward from a massive bowling ball that is initially at rest. After the collision, compared to the golf ball, the bowling ball has more _____. |
| A. | momentum, but less kinetic energy |
| B. | kinetic energy, but less momentum |
| C. | momentum and more kinetic energy |
| D. | but it has less momentum and less kinetic energy |
| Answer» B. kinetic energy, but less momentum | |
| 2200. |
If instead one ball popped out with twice the velocity of the two, this would be a violation of conservation of _____. |
| A. | momentum |
| B. | energy |
| C. | both of these |
| D. | none of these |
| Answer» C. both of these | |