List of top Science Questions

State two natural phenomena of scattering of light.
Which character(s) of the Pea plant has been studied by Mendel in his experiments?
Write down two uses each of convex mirror and convex lens.
Which one of the following is an example of a producer in an ecosystem?
How are voltmeter and ammeter joined on passing current in a resistor?
A refrigerator of 500 watts is used for 12 hours every day. How much kilowatt-hour energy is consumed by the refrigerator for 30 days?
Draw a ray diagram of the image of an object formed by a concave lens.
How many types of defects of vision are there? Write down their names.
The autotrophic mode of nutrition requires:
Reproduction by means of regeneration occurs in:
The anther contains:
The process for obtaining oxide from carbonate ore by heating at a high temperature in a limited supply of air is:
Which of the following is a plant hormone?
The gap between two neurons is called a/an:
Chemical reaction CuSO$_4$ + Fe $\rightarrow$ FeSO$_4$ + Cu is:
The ketone in the following is:
Two wires of resistances R and 2R are joined first in series and then in parallel. If the total resistances in the two conditions are \( R_1 \) and \( R_2 \) respectively, then \( R_1 / R_2 \) will be:
Functional group in propanal is:
The pH value of a neutral solution is:
The element producing hydrogen gas with cold water is:
The cause of twinkling of stars is:
Which of the following lenses should be used to read small letters?
The colour having the largest angle of deviation on passing white light through a prism will be:
The image by a convex mirror of an object placed at infinity is:
Describe in brief the structure of the kidney in humans and also describe its functions.