List of top Science Questions

The least distance of distinct vision for a young adult with normal vision is about
Which of the following is not a part of the female reproductive system in human beings?
The human eye forms the image of an object at its
Asexual reproduction takes place through budding in
Several electric bulbs designed to be used on a 220 V electric supply line, are rated 10 W. How many lamps can be connected in parallel with each other across the two wires of 220 V line if the maximum allowable current is 5 A?

What would be the consequences of a deficiency of haemoglobin in our bodies?

How are the alveoli designed to maximise the exchange of gases?

What are the differences between aerobic and anaerobic respiration? Name some organisms that use the anaerobic mode of respiration.

What are the necessary conditions for autotrophic nutrition and what are its byproducts?

What is the role of the acid in our stomach?

How are fats digested in our bodies? Where does this process take place?

Show how you would connect three resistors, each of resistance 6 Ω, so that the combination has a resistance of 
  1. 9 Ω
  2. 4 Ω

The breakdown of pyruvate to give carbon dioxide, water and energy takes place in

The autotrophic mode of nutrition requires

The xylem in plants are responsible for

The kidneys in human beings are a part of the system for

How many 176 Ω resistors (in parallel) are required to carry 5 A on a 220 V line?
A battery of 9 V is connected in series with resistors of 0.2 Ω, 0.3 Ω, 0.4 Ω , 0.5 Ω and 12 Ω, respectively. How much current would flow through the 12 Ω resistor?
When a 12 V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit. Find the value of the resistance of the resistor.
The human eye can focus objects at different distances by adjusting the focal length of the eye lens. This is due to
A student has difficulty reading the blackboard while sitting in the last row. What could be the defect the child is suffering from? How can it be corrected?
What is the far point and near point of the human eye with normal vision?
A person with a myopic eye cannot see objects beyond 1.2 m distinctly. What should be the type of the corrective lens used to restore proper vision?
How is a voltmeter connected in the circuit to measure the potential difference between two points?

Explain the mechanism of the cleaning action of soaps.