List of practice Questions

\( \text{CaCO}_3 (s) \rightarrow \text{CaO} (s) + \text{CO}_2 (g) \) is what type of reaction?
Converging lens in air is:
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 of the following has the lowest refractive index?
A simple prism is bounded by how many surfaces?
The far point for normal vision is:
What will be the nature of the image of an object, if magnification of the image is negative?
How many laws are there for reflection of light?
A ray of light is incident perpendicular to a plane mirror. The angle of reflection will be:
Which color of light scatters more in the atmosphere?
The structural and functional unit of kidney is called:
What should be the minimum speed of wind in a wind electric generator?
A split ring is used in:
Metallic conduction is based on the motion of which particle in material?
The upper part of a box-type solar cooker has a glass cover. The reason for this is:
A resistor of power \(P_1\) at voltage \(V_1\) is connected in series with another resistor of power \(P_2\) at voltage \(V_2\). The equivalent resistance will be:
The frequency of alternating current in household electric circuits is:
The valency of all elements in a group of the periodic table is:
Which of the following is used as wine?
What is the number of elements in the third group of the periodic table?
Which is used in a solar cell?
The electronic configuration of an element is 2, 8, 7. What is the atomic number of the element?
Duralumin is an alloy of which metal?
The molecular formula of sodium phosphate is: