Matric Part 2 Physics chapter 18 online mcq test with answers for 10th class chemistry unit 18 (Information Technology)

Physics 10th Class English Medium Unit 9 Online Test

Sr. #	Questions	Answers Choice
1	The half life of plutonium²³⁶Pu₉₄is:	2.00 years 2.35 years 2.79 years 2.85 years
2	The half life of argon nuclide Ar-40 is:	2 x 10<sup>8 </sup>years 2 .2x 10<sup>8</sup>years 2.4x 10<sup>8</sup>years 2.8x 10<sup>8</sup>years
3	Safe limit of radiations exposure in one year.	4 rem 5 rem 3 rem 6 rem
4	Radiation was found in:	1896 1895 1897 1898
5	The half life of carbon -14 is:	5730 years 5740 years 5750 years 5760 years
6	When a heavy nucleus splits into lighter nuclei,the process would.	Release nuclear energy absorb nuclear energy Release Chemical energy Absorb Chemical Energy
7	Release of the energy by the sun is due to:	Nuclear Fussion Nuclear Fission Burning of gases Chemical reaction
8	When a Uranium (92 protons)ejects a beta particle, how many protons are left in the remaining nucleus?	89 Protons 90 Protons 91 Protons 93 Protons
9	The Half life of a certain isotopes is 1 day. What is the quantity of isotopes after 2 days?	One half One quarter One eight None of these
10	What happen to the atomic number of an element which emits one alpha particle?	Increase by 1 Stays the same Decrease by 2 Decrease by 1
11	Which among the following radiation has more penetrating power?	A beta pareticle A gamma particle An alpha particle None of these
12	Isotopes are atoms of same element with different :	Atomic mass Atomic Number Number of proton Number of Neutron