List of practice Questions

Harvesting:

 How much charge is there on a hole? Draw the circuit symbol of p-n junction diode. 
 

A vessel contains hydrogen and nitrogen gases in the ratio 2:3 by mass. If the temperature of the mixture of the gases is 30°C, then the ratio of the average kinetic energies per molecule of hydrogen and nitrogen gases is:

Spot the error in the given sentence: 
\(\underline{\text{He and the other}}\) \(\underline{\text{members of the group}} \underline{\text{spoke after}} \underline{\text{their final victory}}. \)

Describe the importance of seed and fruit development.

Given is the one side of a folded sheet of paper with green color on one side and red color on the other side. Find the correct option when this sheet is unfolded. Dotted lines represent the fold lines. 

Define Lanthanide contraction. Write the balanced chemical equation when acidified \( K_2Cr_2O_7 \) reacts with \( H_2S \).
Inner wall of microsporangia is:
A circular plate of radius \( r \) is removed from a uniform circular plate P of radius \( 4r \) to form a hole. If the distance between the centre of the hole formed and the centre of the plate P is \( 2r \), then the distance of the centre of mass of the remaining portion from the centre of the plate P is?

Appeal: 
Prepare an ‘Appeal’ on the topic ‘Traffic Rules for Safety Measures’ with the help of the following points (100 to 150 words): 
- Ignorance and lack of knowledge and information 
- Purpose / need of obedience 
- Avoid accidents / need of society 
- Discipline 
 

Humanistic psychology school of thought is proposed by __________.
 

Explain any two methods of promoting empathy.
What are chromosomal disorders? Describe Turner’s syndrome and Klinefelter’s syndrome.
7-year-old Chinnu has collected all her old toys in a carton. The carton weighs around 2 kg. Draw Chinnu lifting the box and keeping it in the top shelf of her cupboard in the 4 frames given in the answer sheet. Additional Instructions:
- Use only pencils.
- Do not use colours.
Evaluation Criteria:
- Humour.
- Expressions.
- Body Language.
- Anticipation and Exaggeration.
Shown below are the vertical cross-sections of handpumps. Which of the following options depict(s) the correct working principle?
Shown below is a configuration of FOUR solid spheres each of radius 40cm that are placed on four corners of a regular tetrahedron with side 120cm. The centres of the spheres coincide with the corners of the tetrahedron. What is the radius (in cm) of the largest sphere that can be accommodated within the tetrahedron?
Shown below is a configuration of FOUR solid spheres each of radius 40cm
A ball with a thin elastic rod moves from left to right as shown below. Which option represents the movement of the rod?
Ball and elastic rod
A perspective view of a solid object is shown on the left. The object is cut simultaneously along THREE perpendicular planes as shown on the right. How many surfaces will the resulting pieces have in total (i.e. sum of the surfaces of all pieces)?
A perspective view of a solid object is shown on the left
Which option will replace the question mark?
Triangle
How many matching pairs of shoes (both left and right shoe) are present in the image below?
How many matching pairs of shoes (both left and right shoe) are present
An irregular piece of paper is folded and cut as shown below. Which option shows the correct cuts when the paper is unfolded?
Paper piece
Which of the options will collapse completely?
Which option will replace the question mark?
Patterns
Given on the left is the unwrapped surface of a hollow sphere that was intersected by a smaller solid sphere. Which of the options would result in this unwrapped surface?
Given on the left is the unwrapped surface of a hollow sphere that was intersected by a smaller solid sphere
Shown below is a portion of a continuous strip. Which of the option(s) is/are part of this strip?
Shown below is a portion of a continuous strip.