Microorganisms: Friend and Foe — Science STD 8 — Question

If you burn a candle and coal, what is the difference in their burning ?

Name two domestic animals which are used to obtained milk.

Fill in the blanks. If you pass current through copper sulphate solution, copper gets deposited on the plate connected to the __________ terminal of the battery.

A doctor prescribed a tablet to a patient suffering from iron deficiency. The tablet does not look like iron. Explain.

What causes the phases of the Moon?

Where is the mode of transmission in yellow vein mosaic of okra ?

Name some endocrine glands other than pituitary gland.

Name two methods of irrigation with conserve water.

Name the hormone whose deficiency causes diabetes.

Mention the name of the nature of charges on a glass rod and silk cloth when both of them are rubbed with each other.