Draw a diagram showing different parts of an embryo of gram seed and label them.

What do you observe when you add sodium to acetic acid? How would you identify the gas released in the reaction? Describe briefly.

While doing the experiment to show light is necessary for photosynthesis; the student was given following suggestions by his fellow students. Which are the correct suggestions given by his fellow students?

i) Safranin should be used instead of iodine.

ii) The leaf should be boiled in alcohol with water bath to remove chlorophyll.

iii) Transparent paper strip should be used instead of black paper strip.

iv) The plant should be destarched before starting the experiment.

In the experiment ‘To trace the path of ray of light passing through a glass prism’.

i) What is the correct set-up?

ii) Justify for your correct set-up.

When a (60 W, 220V) bulb and a (100 W, 220 V) bulb are connected in series, then which bulb will glow brighter?

OR

In a voltmeter, there are 20 divisions between the 0 mark and 0.5 V mark. Calculate the least count of the voltmeter.