List of practice Questions

Draw a labelled diagram of an electric bulb.
What is persistence of vision?
Draw a ray diagram to show refraction of light at both refractive surfaces of a prism placed in air.
If the lower half of a concave mirror gets broken, then the image:
When a ray of light travels from air (a rarer medium) to glass (a denser medium), it bends:
Which one of the following is the natural source of oxalic acid?
Propane, with the molecular formula \( C_3H_8 \), has:
Ozone layer protects earth from which harmful radiation?
Which non-metal is found in liquid state at room temperature?
The general formula of alkyne is:
The far point for normal vision is:
What will be the nature of the image of an object, if the magnification of the image is negative?
How many laws are there for the reflection of light?
A ray of light is incident perpendicular to a plane mirror. The angle of reflection will be:
Which colour of light scatters more in the atmosphere?
Converging lens in air is:
What is the colour of silver iodide?
The hardest natural substance is:
How many crystalline allotropes of carbon are there?
Zinc blende is an ore of which metal?
How many bonds are there between two atoms in a nitrogen molecule?
Which of the following has the fastest heartbeat?
Which of the following is cellular fuel?
How many phosphates are there in ATP?
Which of the following is not an excretory organ of humans?