1
AIIMS 2019
MCQ (Single Correct Answer)
+1
-0.33
If half life of an element is $$69.3 \mathrm{~h}$$, then how much of its percent will decay in 10th to 11th $$\mathrm{h}$$. Initial activity $$=50 ~\mu \mathrm{~Ci}$$
2
AIIMS 2019
MCQ (Single Correct Answer)
+1
-0.33
Assertion : Heavy water is used to slow neutron in nuclear reactor.
Reason : It does not react with slow neutron and mass of deuterium is comparable to the neutron.
3
AIIMS 2019
MCQ (Single Correct Answer)
+1
-0.33
Assertion : For an element generally $$N \geq Z$$ ( $$N=$$ number of neutrons, $$Z=$$ atomic number)
Reason : Neutrons always experience attractive nuclear force.
Questions Asked from Atoms and Nuclei (MCQ (Single Correct Answer))
Number in Brackets after Paper Indicates No. of Questions
AIIMS Subjects
Physics
Mechanics
Units & Measurement Laws of Motion Circular Motion Work, Energy and Power Center of Mass and Collision Rotational Motion Gravitation Properties of Matter Heat and Thermodynamics Waves
Electricity
Current Electricity Capacitor Moving Charges and Magnetism Magnetism and Matter Electromagnetic Induction Alternating Current
Optics
Modern Physics
Chemistry
Physical Chemistry
Some Basic Concepts of Chemistry Structure of Atom Redox Reactions Gaseous State Ionic Equilibrium Solutions Thermodynamics Electrochemistry Chemical Kinetics Solid State Surface Chemistry
Inorganic Chemistry
Periodic Table and Periodicity Chemical Bonding and Molecular Structure Processes of Isolation of Elements s-Block Elements Hydrogen p-Block Elements d and f Block Elements Coordination Compounds
Organic Chemistry
Biology
Botany
Biomolecules Sexual Reproduction in Flowering Plants Respiration in Plants Biotechnology: Principles and Processes Biological Classification Morphology of Flowering Plants Photosynthesis in Higher Plants Principles of Inheritance and Variation Molecular Basis of Inheritance Strategies for Enhancement in Food Production Organisms and Populations Plant Kingdom Plant Growth and Development
Zoology