Chapter

Describe with the help of a diagram an instrument which can be used to detect a charged body.

Sketch larynx and explain its function in your own words.

What is metamorphosis? Give examples.

Make a labelled diagram of a candle flame.

Arrange the following boxes in proper order to make a flow chart of sugarcane crop production.

The following Table shows the total power shortage in India from 1991– 1997. Show the data in the form of a graph. Plot shortage percentage for the years on the Y-axis and the year on the X-axis.

Make sketches of animal and plant cells. State three differences between them.

What is a constellation? Name any two constellations.

Describe the construction of a kaleidoscope.

Make a sketch of the human nerve cell. What function do nerve cells perform?

Describe the construction of a kaleidoscope.

Mark ‘T’ if the statement is true and ‘F’ if it is false.

(a) Generally non-metals react with acids.                          (  )
(b) Sodium is a very reactive metal.                                    (  )
(c) Copper displaces zinc from zinc sulphate solution.       (  )
(d) Coal can be drawn into wires.                                        (  )

Which of the following statements is correct?
(a) All metals are ductile.
(b) All non-metals are ductile.
(c) Generally, metals are ductile.
(d) Some non-metals are ductile.

The following Table shows the total power shortage in India from 1991– 1997. Show the data in the form of a graph. Plot shortage percentage for the years on the Y-axis and the year on the X-axis.

Describe with the help of a diagram an instrument which can be used to detect a charged body.

Name the largest planet of the solar system.

What are antibiotics? What precautions must be taken while taking antibiotics?

Explain why plastic containers are favoured for storing food.

What is menstruation? Explain.

What are sex hormones? Why are they named so? State their function.