Earth takes about ______ to complete 1 rotation around its axis.
(a) 48 hours
(b) 24 hours
(c) One month
(d) None of these
When a gas turns into a liquid, the process is called ______.
(a) Deposition
(b) Evaporation
(c) Condensation
(d) None of these
Yeast used in making of bread is a ______.
(a) Fungus
(b) Plant
(c) Bacteria
(d) None of these
The disease diphtheria affects the ______ in the human body.
(a) Kidneys
(b) Throat
(c) Intestines
(d) None of these
Liquids that evaporate quickly are known as ______ liquids.
(a) Viscous
(b) Volatile
(c) Transient
(d) None of these
If a ship travels from freshwater to a sea or ocean, it will:
(a) Sink completely
(b) Rise a little higher
(c) Sink a little lower
(d) None of these
Which one of the following is a good source of potassium?
(a) Beetroot
(b) Bananas
(c) Spinach
(d) None of these
What is the chemical name of bleaching powder?
(a) Calcium Hypochlorite
(b) Calcium Chlorate
(c) Calcium Chloride
(d) None of these
The most abundant element in earth’s crust is:
(a) Silicon
(b) Oxygen
(c) Aluminium
(d) None of these
Who invented paper?
(a) Egyptians
(b) Spanish
(c) French
(d) Chinese