MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 486 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 451. |
Out of the followingplaces, a nuclear power plant is not located at |
| A. | Talcher (Orissa) |
| B. | Kaiga (Karnataka) |
| C. | Rawatbhata (Rajsthan) |
| D. | Kalpakkam (Tamilnadu) |
| Answer» B. Kaiga (Karnataka) | |
| 452. |
The amount of a radioactive material (having a half life of 100 years) remaining after 400 years will be __________ of its original weight. |
| A. | 43497 |
| B. | 43556 |
| C. | 43678 |
| D. | 42370 |
| Answer» E. | |
| 453. |
Which of the following isotopes is not present in natural uranium ? |
| A. | U-238 |
| B. | U-234 |
| C. | U-235 |
| D. | U-232 |
| Answer» E. | |
| 454. |
Energy produced in the nuclear fission is of the order of __________ MeV. |
| A. | 20 |
| B. | 200 |
| C. | 1000 |
| D. | 2000 |
| Answer» C. 1000 | |
| 455. |
The half life period of a radioactive element depends on its |
| A. | temperature |
| B. | pressure |
| C. | amount |
| D. | none of these |
| Answer» E. | |
| 456. |
The second underground nuclear test was conducted by India at |
| A. | Jaisalmer |
| B. | Pokhran |
| C. | Kalpakkan |
| D. | Narora |
| Answer» C. Kalpakkan | |
| 457. |
Positron is a/an |
| A. | nucleus having two protons. |
| B. | helium nucleus. |
| C. | electron with positive charge. |
| D. | nucleus with one proton and one neutron. |
| Answer» D. nucleus with one proton and one neutron. | |
| 458. |
Which of the following may not need a control rod ? |
| A. | Liquid metal cooled reactor. |
| B. | Fast breeder reactor. |
| C. | Candu reactor. |
| D. | None of these. |
| Answer» E. | |
| 459. |
Molten sodium is used as a coolant in a fast breeder reactor, because of its |
| A. | excellent moderating properties. |
| B. | neutron breeding capability. |
| C. | faster heat removal capability from the core. |
| D. | capability to increase the reaction rate in the core. |
| Answer» D. capability to increase the reaction rate in the core. | |
| 460. |
Research reactors are normally meant for |
| A. | producing high neutron flux 1012-1013 neutrons/cm2, sec and studying the effect of neutron bombardment on dif ferent materials. |
| B. | accelerating the neutrons. |
| C. | power generation. |
| D. | none of these |
| Answer» B. accelerating the neutrons. | |
| 461. |
Unit of radioactivity is |
| A. | barn |
| B. | Fermi |
| C. | Angstrom |
| D. | Curie |
| Answer» E. | |
| 462. |
Heavy water (D2O) in a nuclear reactor serves as a |
| A. | coolant |
| B. | moderator |
| C. | both (a) & (b) |
| D. | neutron absorber |
| Answer» D. neutron absorber | |
| 463. |
Ordinary water is not used as a moderator because, it |
| A. | has a low absorption cross-section. |
| B. | has a low scattering cross-section. |
| C. | absorbs neutrons. |
| D. | does not absorb neutrons. |
| Answer» D. does not absorb neutrons. | |
| 464. |
Nuclear fuel usually used in a Boiling Water Reactor (BWR) is |
| A. | plutonium |
| B. | enriched uranium |
| C. | natural uranium |
| D. | thorium |
| Answer» C. natural uranium | |
| 465. |
Fast breeder reactors are most usable in India, because of our largest __________ deposits. |
| A. | thorium |
| B. | plutonium |
| C. | uranium |
| D. | none of these |
| Answer» B. plutonium | |
| 466. |
One 'amu' is equivalent to |
| A. | 9.31 Mev |
| B. | 931 eV |
| C. | 931 MeV |
| D. | 931 J |
| Answer» D. 931 J | |
| 467. |
Final product of uranium extraction plant at Jadugoda (Bihar) is |
| A. | uranium |
| B. | uranium oxide |
| C. | uranium carbide |
| D. | magnesium diuranate |
| Answer» E. | |
| 468. |
Which is used as a coolant in nuclear reactor due to its high capture cross-section ? |
| A. | H2 |
| B. | N2 |
| C. | He |
| D. | CO2 |
| Answer» B. N2 | |
| 469. |
Hydrogen has __________ isotopes. |
| A. | no |
| B. | one |
| C. | two |
| D. | three |
| Answer» E. | |
| 470. |
An electron has a mass that is approximately __________ that of the proton. |
| A. | 1836 (approximately) |
| B. | 1/1836 (approximately) |
| C. | 1 |
| D. | ‚àû |
| Answer» C. 1 | |
| 471. |
Which of the following is not a naturally occurring nuclear fuel ? |
| A. | Uranium-238 |
| B. | Thorium-233 |
| C. | Plutonium-239 |
| D. | None of these |
| Answer» D. None of these | |
| 472. |
Hydrogen bomb employs the nuclear fusion of |
| A. | hydrogen |
| B. | deuterium |
| C. | tritium |
| D. | helium |
| Answer» C. tritium | |
| 473. |
The decay product of tritium (a beta emitter) is |
| A. | lithium |
| B. | helium |
| C. | deuterium |
| D. | hydrogen |
| Answer» C. deuterium | |
| 474. |
Heavy water plant is not located at |
| A. | Talcher |
| B. | Tuticorin |
| C. | Ramagundam |
| D. | Kota |
| Answer» D. Kota | |
| 475. |
Which of the following is not, a fertile material ? |
| A. | Th-232 |
| B. | U-238 |
| C. | U-233 |
| D. | none of these |
| Answer» D. none of these | |
| 476. |
The decrease in the atomic number is not observed in case of |
| A. | electron capture |
| B. | β-emission |
| C. | α-emission |
| D. | positron emission |
| Answer» C. Œ±-emission | |
| 477. |
The first underground nuclear test was conducted by India at |
| A. | Jaisalmer |
| B. | Pokharan |
| C. | Kalpakkam |
| D. | Narora |
| Answer» C. Kalpakkam | |
| 478. |
Which is the most commonly used molten metal for cooling of nuclear reactors ? |
| A. | Calcium |
| B. | Sodium |
| C. | Mercury |
| D. | Zinc |
| Answer» C. Mercury | |
| 479. |
The atomic number of a radioactive element is not changed, when it emits __________ rays. |
| A. | α |
| B. | β |
| C. | γ |
| D. | α & β |
| Answer» D. Œ± & Œ≤ | |
| 480. |
Spent fuel from the nuclear thermal reactor contains |
| A. | fission products |
| B. | plutonium |
| C. | unused fuel |
| D. | all (a), (b) & (c) |
| Answer» E. | |
| 481. |
The type of pump used for the recirculation of molten sodium coolant in liquid metal cooled reactor is a/an __________ pump. |
| A. | electromagnetic |
| B. | reciprocating |
| C. | centrifugal |
| D. | volute |
| Answer» B. reciprocating | |
| 482. |
The mass number of an element is not changed, when it emits __________ radiations. |
| A. | α & β |
| B. | β & γ |
| C. | γ & α |
| D. | α, β, & γ |
| Answer» C. Œ≥ & Œ± | |
| 483. |
Plutonium |
| A. | is recovered from spent fuel from thermal nuclear reactor. |
| B. | has much lower melting point (640°C ) compared to thorium (1690°C). |
| C. | both (a) and (b). |
| D. | neither (a) nor (b). |
| Answer» D. neither (a) nor (b). | |
| 484. |
Fast breeder reactors do not |
| A. | use Th-232 as fissile fuel. |
| B. | convert fertile material to fissile material. |
| C. | use fast neutrons for fission. |
| D. | use molten sodium as coolant. |
| Answer» B. convert fertile material to fissile material. | |
| 485. |
Thermal neutrons which are used to cause the fission of U-235 have energy __________ eV. |
| A. | < 0.025 |
| B. | > 1 |
| C. | 45658 |
| D. | > 200. |
| Answer» B. > 1 | |
| 486. |
Which of the following may be used to measure the rate of nuclear disintegration? |
| A. | Geiger-Muller Counter |
| B. | Cyclotron |
| C. | Cold chamber |
| D. | Mass spectrograph |
| Answer» B. Cyclotron | |