Chemistry Mcqs for the preparation of NTS, PPSC, SPSC, BPSC, KPSC, FPSC, OTS and other academic entry test and jobs tests.
31. What is the Air
(a) Element
(b) Compound
(c) Mixture
(d) Colloid
32. The ore of aluminium metal is
(a) Cuprite
(b) Galena
(c) Bauxite
(d) Zirconite
33. What element is the most electronegative and reactive of all elements
(a) Hydrogen
(b) Chlorine
(c) Fluorine
(d) Oxygen
34. The filament of an electric bulb is made of
(a) Tungsten
(b) Iron
(c) Nichrome
(d) Carbon
35. What element’s three isotopes have different names
(a) Oxygen
(b) Helium
(c) Hydrogen
(d) Carbon
36. Which of these is a noble metal
(a) Gold
(b) Calcium
(c) Magnesium
(d) Zinc
37. What is the PH of water
(a) 9
(b) 6
(c) 7
(d) 8
38. This acid is used in almost all car batteries and is also known as ‘Oil of Vitriol’. Which acid is it
(a) Sulphuric acid
(b) Perchloric acid
(c) Nitric add
(d) Acetic acid
39. Which metal is extracted from hematite
(a) Copper
(b) Iron
(c) Zinc
(d) Potassium
40. What was the first element to be produced artificially
(a) Plutonium
(b) Neptunium
(c) Francium
(d) Technetium
41. What is the name of the pigment that gives the green color to plants
(a) Carotene
(b) Chlorophyll
(c) Phenolphthalein
(d) Xanthophyll
42. The name “copper” is derived from the name of the tiny island country of
(a) Cyprus
(b) Denmark
(c) Greece
(d) Malta
43. Which of the following bases is involved in the making of soap
(a) Baking soda
(b) Caustic soda
(c) Ammonia
(d) Washing soda
44. The most commonly used bleaching agent is
(a) Sodium chloride
(b) Carbon dioxide
(c) Chlorine
(d) Alcohol
45. The development of the ultra microscope makes use of the
(a) Edison effect
(b) Tyndall effect
(c) Brownian motion
(d) Zeeman effect
