(A) Water
(B) Kerosene
(C) Petrol
(D) Pyridine
Chemical name of common salt is?
(A) Calcium chloride
(B) Ammonium chloride
(C) Sodium chloride
(D) Sodium nitrate
Freezer in a refrigerator is fitted near the top?
(A) To minimize power consumption
(B) To keep it away from hot compressor which is nearer to the bottom
(C) Because of convenience
(D) It facilitates convection currents
Pasteurisation is the process in which milk is heated to?
(A) 600 C for 10 minutes
(B) 630 C for 20 minutes
(C) 630 C for 30 minutes
(D) 720 C for 10 minutes
Which among the following is not biodegradable?
(A) Plant leaves
(B) Soap
(C) Lab detergents
(D) Domestic sewage
A radioactive substance emits?
(A) Alpha particles
(B) Beta particles
(C) Gamma particles
(D) All of the above
Which of the following is not present in German silver?
(A) Nickel
(B) Zinc
(C) Silver
(D) Copper
Alum stops bleeding in minor cuts because of?
(A) Coagulation
(B) Salvation
(C) Emulsion
(D) Dialysis