Introduction
Trending Questions
What happens inside the nucleus that causes the emission of beta particle?
An electron is emitted from the nucleus
A neutron gets converted into a proton
A proton gets converted into a neutron
A particle with 2 protons and 2 neutrons are emitted
' Every substance has an intrinsic property of electricity, which manifested as an electric fluid' - Explain
Question 12
The important message conveyed by the ‘Chipko Movement’ is
(a) to involve the community in forest conservation efforts
(b) to ignore the community in forest conservation efforts
(c) to cut down forest trees for developmental activities
(d) government agencies have the unquestionable right to order destruction of trees in forests
The difference in the atomic structures of Isotopes is
They have different number of neutrons in the nucleus
They have different number of protons and different number of neutrons in the nucleus
They have different number of protons in the nucleus
They have different number of electrons in the nucleus
What is geothermal energy?
- True
- False
- Physics and chemistry
- Chemistry only
- Physics only
- Biology only
Composition of the nuclei of two atomic species, X and Y are given as under
X Y
Protons = 6 6
Neutrons = 6 8
Give the mass numbers of X and Y. What is the relation between the two species?
Mass number = A-4 and Atomic number = Z
Mass number = A-2 and Atomic number = Z
Mass number = A and Atomic number = Z-2
Mass number = A-4 and Atomic number = Z-2
Reason : We can speed up the reforestation by planting trees.
- Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
- Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
- Assertion is correct but Reason is incorrect.
- Both Assertion and Reason are incorrect.
- If the Assertion is false but Reason is true.
The direction of the conventional current is opposite to the direction of flow of
electrons
protons
neutrons
none of these
- only electrons
- only protons
- only neutrons
- both protons and neutrons
- Petroleum
- Sun
- Coal
- Natural gas
What are the advantages of nuclear energy?
- Abundance
- Boiling point
- Latent heat of vaporization
- Bond energy
1. Rate of Emission I. Temperature of the Surroundings
2. Rate of Absorption II. Temperature of the Body
- 1-I, 2-II
- 1-II, 2-I
- 1-I, 2-I
- 1-II, 2-II
Write a short note on watershed management.
Locate and name the water reservoirs in the below images. Which body has an advantage over the other water body and why? .[5 MARKS]
Figure (a)
Fig (b)