List of practice Questions

What is digestion? Describe the process of digestion in humans with a diagram.
Write short notes on any two of the following:
(a) Fission
(b) Regeneration
(c) Budding
What are fossils? Explain their role as evidence for organic evolution.
What do you mean by alternative (non-conventional) or renewable energy sources? Describe any three renewable energy sources in detail.
Describe in detail the process of transportation of water, minerals and food in plants.
The image formed by a concave mirror is real, inverted and of the same size as the object. The position of the object will be:
On passing a ray of white light through a prism, the colour which has minimum deviation is:
Explain the power of accommodation of the eye. Draw a ray diagram for image formation by a convex lens when (a) the object is at a distance of 2f, (b) the object is in between 2f and infinity.
Mention any two advantages of parallel combination of resistances. In the given circuit, find the value of current in each resistance and the total current in the circuit.
Explain the meaning of electromagnetic induction. Mention any two methods for producing induced current in a coil. State Fleming's right hand rule for finding the direction of induced current.
What is the use of an electric motor? Discuss the construction, working principle and working of an electric motor with the help of a labelled diagram.
Balance the following equations:
(i) \( \text{H}_2\text{SO}_4 (aq) + \text{NaOH} (aq) \rightarrow \text{Na}_2\text{SO}_4 (aq) + \text{H}_2\text{O} (l) \)
(ii) \( \text{MgCl}_2 (aq) + 2\text{AgNO}_3 (aq) \rightarrow \text{Mg(NO}_3)_2 (aq) + 2\text{AgCl} (g) \)
(i) Write the name of reactant and product for the reaction: \[ \text{Zn} + \text{H}_2\text{SO}_4 \rightarrow \text{ZnSO}_4 + \text{H}_2 \uparrow \]
(ii) Write the reaction for thermal dissociation of ammonium chloride and name the substances formed.
Write IUPAC names for the following compounds:
Write the atomic number and valency of the following elements:
(i) Oxygen
(ii) Potassium
Write notes on the following:
(a) Addition and substitution reactions
(b) Micelle
(c) Neutralization reaction
In a healthy human, the normal Blood Pressure (B.P.) is:
Which one of the following is the best example of homologous organs?
As per Mendel, which one of the following genotype will express tall stem and wrinkled seeds in peas?
Asexual reproduction by binary fission takes place in:
In order to protect the forest wealth, the famous "Chipko Movement" was organized by local people in:
Gastric glands are present in:
How many types of spherical mirrors are there? Write their names. Give the definition of centre of curvature and principal axis of a spherical mirror. Focal length of a convex mirror is 30 cm. An object of length 5 cm is placed in front of a mirror at a distance of 30 cm. Find the position, size, and nature of the image.
The reaction \( \text{Zn} + \text{H}_2\text{SO}_4 \rightarrow \text{ZnSO}_4 + \text{H}_2 \) is a:
Common name for \( \text{Na}_2\text{CO}_3 \) is: