List of top Science Questions

Write down the working and colours of the insulation of the wires used in the domestic electrical distribution circuit:
(i) Live wire
(ii) Earthing wire
(iii) Neutral wire
Write the balanced chemical equations for the following reactions:
Explain
(i) Fleming’s Left Hand Rule and
(ii) Right Hand Thumb Rule. For which physical quantities are they used for finding their directions?
Which of the following organ represents the male reproductive organ in plants?
The focal length of a convex lens is 50 cm. State the position of the image of an object placed at a distance of 25 cm, perpendicularly on its axis. Also, determine the magnification of the image.
Which of the following is/are called environment-friendly practice(s)?
At what distance should an object be placed from a concave mirror of focal length 10 cm, so that a real image 5 times larger is formed? Also, find the position of the image.
Loop is placed in which part of the female reproductive system?
Chemical formula of propane is:
Reproduction in Hydra occurs by:
The kidneys in human beings are a part of which system?
The process of breakdown of pyruvate takes place in:
Mendel got his primary education in:
Which of the following is an amphoteric oxide?
Which of the following is an acidic salt?
In the chemical reaction, $2 FeCl_3 + 2 H_2O + Y \rightarrow 2 FeCl_2 + H_2SO_4 + 2 HCl$, Y is:
Matte mainly consists of:
Complete the following chemical equation:
________ + PCl5 → CH3COCl + POCl3 + HCl
The filament in an electric bulb is made of:
The transformation in an electric cell is:
Two wires of resistances $R_1$ and $R_2$ are joined in parallel. Their equivalent resistance will be:
Which lens is used in correcting the defect of long-sightedness (far-sightedness)?
When white light passes through a prism of glass, the colour of a light ray bent maximum towards the base of the prism is:
The magnification of the virtual image of an object placed at a distance of 0.2 m from the lens is 0.5. The lens will be:
The image of an object placed between the pole and the focus of a concave mirror is formed: