List of practice Questions

What is the direction of magnetic field lines inside a current-carrying solenoid?
The refractive index of glass is \(1.5\) and that of water is \(1.33\). In which medium will light bend more? Explain with reason.
What is meant by accommodation of the eye?
A student sitting in the back row has difficulty seeing the blackboard. What kind of defect might the student's eye have? How can it be corrected?
A person's near point is \(50\text{ cm}\). His far point is \(2\text{ m}\). What is the name of the defect of vision he is suffering from?
Suggest the use of suitable lenses for the correction of each defect mentioned in the previous question.
Why is the use of iodized salt logical/recommended?
To get a real image of the same size as the object, where should the object be placed in front of a convex lens?
The action of which of the following changes the focal length of the eye lens?
During a short circuit, the current in the circuit -
What is the S.I. unit of resistance?
Which type of mirror is used by dentists to examine teeth?
Name a nitrogenous excretory product present in human urine.
What is a synapse?
Write the full form of ATP.
Where is a gene located?
Name two sexually transmitted diseases (STDs).
What is a stomata? Write the function of stomata.
Why is energy flow in an ecosystem unidirectional?
What is a fossil?
Mention the importance of fossils.
Match the following modes of asexual reproduction with their respective organisms:
(i) Budding
(ii) Regeneration
(iii) Binary fission
(iv) Multiple fission
Options to match with: (a) Planaria, (b) Leishmania, (c) Plasmodium, (d) Yeast
What do you mean by reflex arc? Draw a simple reflex arc and label the following parts: (i) Receptor (ii) Sensory nerve (iii) Motor nerve (iv) Effector.
What is excretion?
Draw a labeled diagram of the human excretory system.