Standard VII

Q.

30 opposite words in English from a to z?

Q.

A train starting from a railway station and moving with uniform acceleration attains a speed of $40km{h}^{-1}$ in $10minutes$. Find its acceleration in the units of $m{s}^{-2}$.

Q.

An athlete completes one round of a circular track of diameter $200\mathrm{m}$ in $40\mathrm{s}.$ What will be the distance covered and the displacement at the end of $2\min 20\mathrm{s}?$

Q.

A farmer moves along the boundary of a square field of side 10m in 40 s. What will be the magnitude of displacement of the farmer at the end of 2 minutes 20 seconds from his initial position?

Q.

How would you test the presence of starch in leaves?

Q.

Name the states of India through which the tropic of cancer passes.

Q. When lead nitrate reacts with potassium iodide then a yellow precipitate of:

1. $PbI{O}_3$ is formed
2. $Pb{I}_2$ is formed
3. $KN{O}_3$ is formed
4. $Pb(N{O}_3{)}_2$ is formed

Q.

What is the reason respiration is considered an exothermic reaction?

Q.

During an experiment, a signal from a spaceship reached the ground station in five minutes. What was the distance of the spaceship from the ground station? The signal travels at the speed of light, that is, 3 × 10⁸m/s.

Q.

Write the Full Form of SC, ST, and OBC.

Q.

What are the five rational numbers between $\frac{3}{5}$and$\frac{4}{5}$?

Q. Explain the contributions of Dr. B.R. Ambedkar in the formation of the Constitution of India.

Q.

Write 10 lines on the usefulness of microorganisms in our lives.

Q.

Describe the process of Photosynthesis.

Q.

Hydrogen gas combines with nitrogen to form Ammonia. Translate the following statement into the chemical equation and then balance the equation?

Q.

How are water and minerals transported in plants?

Q.

Prove with the help of an experiment that carbon dioxide is necessary for photosynthesis.

Q.

Write two different ways in which glucose is oxidized to provide energy in the human body. Write the products formed in each case.

Q.

Write the difference between weather and climate.

Q.

Name the three organs of the government and what are their functions?

Q.

Name the difference types of teeth and their function

Q.

Show with the help of a sketch that the plants are the ultimate source of food.

Q.

Why is respiration an exothermic reaction?

Q. Which meridian or longitude is used to fix the standard time of India?

1. 83.5°W
2. 82.5°E
3. 84.5°E
4. 83.5°E

Q.

An artificial satellite is moving in a circular orbit of a radius $42250km$. Calculate its speed if it takes $24$ hours to revolve around the earth.

Q.

Write the difference between parasites and saprotroph?

Q.

How to convert kilometre per hour to metre per second

Q.

Why is a cell membrane called a selectively permeable membrane?

1. It is permeable only during certain stages of cell division.
2. It allows only selective molecules to pass through it.
3. It allows only water to pass.
4. It is made up of lipids.

Q.

What are the factors that affect photosynthesis?

Q.

Derive the formula for Celsius to Fahrenheit?