The balanced reaction for following chemical reaction is:
Barium sulphate + Aluminium chloride → Barium chloride + Aluminium sulphate
Which of the following is not the use of bleaching powder?
(i) to make drinking water free from germs
(ii) in soda-acid fire extinguishers
(iii) as an oxidising agent in many chemical industries
(iv) for baking cakes
Which of the following situations is/are possible?
(a) Magnetic field lines can be parallel to each other.
(b) Magnetic field lines can be concentric circles.
(c) Magnetic field lines can intersect each other.
A statement is given followed by two assumptions numbered I and II. You have to assume everything in the statement to be true and decide which of the given assumptions is/are implicit in the statement.
Statement:
The demand for smartphones and laptops has increased substantially since the introduction of online classes in schools.
Assumptions:
I. People are buying smartphones and laptops to enable their children to attend online classes
II. Desktop computers cannot be used to attend online classes.
A Student focuses a sharp image of sun using a spherical mirror on a sheet of paper, which starts to burn after some time. Which of the following statement/statements about the mirror is/are correct?
a) It is concave spherical mirror
b) It is positive focal length
c)It is a converging mirror
What will come in the place of A and B, respectively in the given double displacement reaction?
A+B -----> AgBr + KNO_3