NEET 2020 Phase 1 | Atoms and Nuclei Question 27 | Physics

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NEET 2020 Phase 1

MCQ (Single Correct Answer)

-1

The energy equivalent of 0.5 g of a substance is :

$$4.5 \times {10^{13}}J$$

$$1.5 \times {10^{13}}J$$

$$0.5 \times {10^{13}}J$$

$$4.5 \times {10^{16}}J$$

NEET 2019

MCQ (Single Correct Answer)

-1

$$\alpha $$-particale consists of :

2 electrons, 2 protons and 2 neutrons

2 electrons and 4 protons only

2 protons only

2 protons and 2 neutrons only

NEET 2019

MCQ (Single Correct Answer)

-1

The total energy of an electron in an atom in an orbit is –3.4 eV. Its kinetic and potential energies are, respectively.

3.4 eV, – 6.8 eV

3.4 eV, 3.4 eV

– 3.4 eV, – 3.4 eV

– 3.4 eV, – 6.8 eV

NEET 2018

MCQ (Single Correct Answer)

-1

Out of Syllabus

For a radioactive material, half-life is 10 minutes. If initially there are 600 number of nuclei, the time taken (in minutes) for the disintegration of 450 nuclei is

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Biology

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Human Health and Diseases Body Fluids and Its Circulation Locomotion and Movement Neural Control and Coordination Reproduction in Organisms Reproductive Health Structural Organisation in Animals Digestion and Absorption Excretory Products and Their Elimination Chemical Coordination and Integration Human Reproduction Animal Kingdom Breathing and Exchange of Gases Evolution