The electrons present in the outermost shell of an atom
The electrons present in the outermost shell of an atom.
Identify the term/substance
Given below are diagrams showing the different stages in the process of fertilisation of an egg
Given below are diagrams showing the different stages in the process of fertilisation of an egg in the human female reproductive tract
Study the diagrams and answer the questions:
- Arrange the ...
The pollutants that cannot be broken down to simple and harmless products
The pollutants that cannot be broken down to simple and harmless products.
How can waste be reused? Explain with the help of an example
How can waste be reused? Explain with the help of an example.
Potassium sulphite on reacting with hydrochloric acid
Potassium sulphite on reacting with hydrochloric acid releases _______ gas. (Cl2, SO2, H2S)
Hydrogen chloride gas fumes in moist air
State one relevant reason: Hydrogen chloride gas fumes in moist air.
Penicillin obtained from a fungus
Penicillin obtained from a fungus is:
- Antibiotic
- Antiseptic
- Antibody
- Antiserum
$x^2 + 4kx + (k^2 -k + 2) = 0$
Find the value of k for which the following equation has equal roots.
$x^2 + 4kx + (k^2 - k + 2) = 0$
Dry hydrogen chloride gas can be collected by ___ displacement of air. (downward / upward)
Dry hydrogen chloride gas can be collected by ____ displacement of air. (downward / upward)
It had no eyes, ears, nose or mouth
Read the extract given below and answer the questions that follow:
It had no eyes, ears, nose or mouth. It was just a round smooth head - with a school cap on top of it! And that’s where the story should...
Write any four functions of the General Assembly
The necessity to maintain International peace led to the establishment of the United Nations Organisation. With reference to the statement, answer the following: Write any four functions of the...