Chemistry MCQ’s Quiz Questions for NTS, PPSC, CSS, FPSC, PMS, OTS, PTS Tests and Interviews. MCQs are taken from Caravan Comprehensive book. These Multiple Choice Questions of Chemistry are posted here for preparation of Job tests and Entry tests like MCAT and ECAT etc.<\/p>\n
1. X-rays are produced when a stream of electrons in an X-ray tube?<\/strong><\/p>\n (a) Hits the glass wall of the tube 2. In the periodic table, elements have been arranged?<\/strong><\/p>\n (a) In order of increasing volume 3. Which group of elements in the periodic table show highest first ionisation potential. Elements in the_______?<\/strong><\/p>\n (a) Left hand top corner<\/span> 4. When we move from left to right in second period, the atomic volume of the element?<\/strong><\/p>\n (a) Increases 5. Generally in a given period in the periodic table, as we move from left to right, the electropositive character of elements_______?<\/strong><\/p>\n (a) Increases 6. Atom bomb is based on the principle of ______?<\/strong><\/p>\n (a) Nuclear fusion 7. Oxidation involves?<\/strong><\/p>\n (a) Gain in electrons 8. The substances are radioactive, which have_________?<\/strong><\/p>\n (a) Electrons in their nuclei 9. When nuclear energy is intended to be harnessed for generation of electricity, potentially destructive neutrons released in a nuclear reactor are absorbed by?<\/strong><\/p>\n (a) Heavy water 10. Nuclear power reactors are operated at low temperatures and consequently with lower efficiency because?<\/strong><\/p>\n (a) Nuclear heat is carried by ordinary steam 11. The energy emitted from the sun is supposed to be due to______?<\/strong><\/p>\n (a) Nuclear fission 12. In a hydrogen bomb, hydrogen is converted into?<\/strong><\/p>\n (a) Barium 13. When two ice cubes are pressed over each other they unite to form one cube. Which of the following force is responsible for holding them together?<\/strong><\/p>\n (a) Vander Walls forces 14. The high boiling point of water is due to?<\/strong><\/p>\n (a) Weak dissociation of water molecule 15. Ice has an open structure compared to water due to which it floats on water and occupies a greater volume of space. The open structure of ice is due to?<\/strong><\/p>\n (a) Solid state of ice See More<\/p>\n Chemistry MCQ’s Quiz Questions for Competitive Exams with Answers VOL 3<\/a><\/p>\n
\n(b) Strikes metal target<\/span>
\n(c) Pass through a strong magnetic field
\n(d) None<\/p>\n
\n(b) In order of increasing atomic number<\/span>
\n(c) In order of increasing atomic weights
\n(d) In order of increasing density<\/p>\n
\n(b) Left hand bottom corner
\n(c) Right hand top corner
\n(d) Right hand bottom corner<\/p>\n
\n(b) Increases with constant state<\/span>
\n(c) Decreases
\n(d) None of these<\/p>\n
\n(b) Decreases<\/span>
\n(c) Neither increases nor decreases
\n(d) Decreases then increases<\/p>\n
\n(b) Nuclear fission<\/span>
\n(c) Radioactive
\n(d) Nuclear fission and fusion both<\/p>\n
\n(b) Gain of hydrogen
\n(c) Loss of electrons<\/span>
\n(d) Combustion<\/p>\n
\n(b) Nuclei with less number of neutrons<\/span>
\n(c) Unstable nuclei
\n(d) Electrons removed from the outermost shell<\/p>\n
\n(b) Long rods of Cd
\n(c) Cubical blocks of steel<\/span>
\n(d) A pile of blocks made of graphite<\/p>\n
\n(b) Uranium is difficult to heat
\n(c) The walls of nuclear reactors can not withstand high temperature<\/span>
\n(d) High pressure inside the reactor reduces the temperature<\/p>\n
\n(b) Nuclear fusion<\/span>
\n(c) Combustion of hydrogen
\n(d) Combustion of He
\n(e) Radioactive disintegration<\/p>\n
\n(b) Uranium
\n(c) Uranium-238
\n(d) Helium<\/span><\/p>\n
\n(b) Covalent attraction
\n(c) Hydrogen bond formation<\/span>
\n(d) Dipole attraction<\/p>\n
\n(b) Hydrogen bonding among water molecules<\/span>
\n(c) Its high specific heat
\n(d) Its high dielectric constant<\/p>\n
\n(b) Its low density
\n(c) Crystalline nature
\n(d) Hydrogen bonding<\/span><\/p>\n