1.
Which element is found in all proteins?
2.
Which element is used to disinfect drinking water?
3.
What is the chemical symbol for iron?
4.
Which element is used in the production of fertilizers?
5.
What is the pH of pure water?
6.
What is the most abundant element in the universe?
7.
What is the chemical name for quicklime?
8.
What is the chemical formula for carbon dioxide?
9.
Which element is a good conductor of electricity?
10.
Which element is known as 'quick silver'?
11.
Which gas is used in balloons to make them float?
12.
Which element is known as the 'King of Chemicals'?
13.
Which metal is commonly used in electrical wiring?
14.
Which element is liquid at room temperature?
15.
Which element is the main component of steel?
16.
Which element is known as the 'sun element'?
17.
Which element is used in making light bulbs?
18.
What is the chemical formula for methane?
19.
What is the chemical formula for table salt?
20.
Which element is used in thermometers?
21.
What is the chemical symbol for calcium?
22.
What is the chemical formula for ozone?
23.
What is the chemical symbol for silver?
24.
Which of the following is an alkaline earth metal?
25.
Which gas is commonly known as 'marsh gas'?
26.
Which element has the highest melting point?
27.
What is the chemical formula for table sugar (sucrose)?
28.
What is the chemical formula for table salt?
29.
What is the atomic number of carbon?
30.
Which acid is commonly used in car batteries?
31.
What is the chemical formula for sulfuric acid?
32.
Which element is commonly used in batteries?
33.
Which element is used in the production of nuclear energy?
34.
What is the common name for H2O2?
35.
Which element is the main component of coal?
36.
What is the chemical formula for glucose?
37.
What is the chemical formula for ethanol?
38.
What is the lightest element?
39.
What is the atomic number of neon?
40.
What is the atomic number of hydrogen?
41.
What is the atomic number of nitrogen?
42.
What is the chemical formula for nitric acid?
43.
What is the chemical symbol for lead?
44.
Which of the following is a non-metal?
45.
Which element is used in the production of glass?
46.
Which element is commonly used in light bulb filaments?
47.
Which element is found in all organic compounds?
48.
Which element is used in pencils?
49.
Which gas is produced when an acid reacts with a metal?
50.
What is the chemical symbol for water?
51.
Which element is used in the manufacture of semiconductors?
52.
Which element is used in the production of toothpaste?
53.
Which element is commonly used in making jewelry?
54.
Which element is known as the 'building block of life'?
55.
What is the common name for calcium carbonate?
56.
Which gas is essential for the process of photosynthesis?
57.
Which element is a liquid at room temperature?
58.
What is the atomic number of helium?
59.
Which metal is the best conductor of electricity?
60.
Which element is used in the production of bleach?
61.
Which acid is found in vinegar?
62.
What is the common name for sodium bicarbonate?
63.
What is the atomic number of aluminum?
64.
What is the chemical name for rust?
65.
What is the chemical formula for hydrochloric acid?
66.
Which of the following is a metal?
67.
What is the main constituent of natural gas?
68.
What is the chemical formula for baking soda?
69.
Which gas is produced during the process of respiration?
70.
Which element is the primary component of diamonds?
71.
Which gas is known as laughing gas?
72.
Which gas is produced during photosynthesis?
73.
Which element is used in making matches?
74.
What is the atomic number of phosphorus?
75.
What is the chemical symbol for magnesium?
76.
What is the chemical symbol for potassium?
77.
What is the chemical formula for sulfur dioxide?
78.
What type of bond is formed between sodium and chlorine in sodium chloride?
79.
What is the main constituent of biogas?
80.
Which of the following is a noble gas?
81.
What is the chemical symbol for zinc?
82.
What is the chemical formula for ammonia?
83.
What is the most abundant gas in the Earth's atmosphere?
84.
What is the chemical formula for acetic acid?
85.
Which gas is used in soft drinks?
86.
Which gas is known as 'laughing gas'?
87.
What is the atomic number of oxygen?
88.
Which element is used in the production of fireworks?
89.
What is the chemical symbol for gold?
