1.
H
Correct Answer
A. Hydrogen
Explanation
Hydrogen is the correct answer because it is the first element on the periodic table. It has an atomic number of 1 and is the lightest and most abundant element in the universe. Hydrogen is a colorless, odorless, and highly flammable gas. It is commonly used in various industries, such as the production of ammonia and methanol, as well as in fuel cells for clean energy production.
2.
Li
Correct Answer
Lithium
3.
Na
Correct Answer
Sodium
4.
K
Correct Answer
Potassium
5.
Cesium
Correct Answer
Cs
Explanation
Cesium is a chemical element with the symbol Cs. The given answer "Cs" is the correct symbol for cesium according to the periodic table.
6.
Be
Correct Answer
7.
Mg
Correct Answer
Magnesium
8.
Calcium
Correct Answer
Ca
9.
Strontium
Correct Answer
Sr
10.
Barium
Correct Answer
Ba
11.
Ra
Correct Answer
Radium
12.
Boron
Correct Answer
B
Explanation
The correct answer is B because Boron is the chemical symbol for the element boron. Chemical symbols are used to represent elements in the periodic table and are typically one or two letters long. In this case, B is the symbol that represents boron.
13.
Aluminium
Correct Answer
Al
Explanation
Aluminium is a chemical element with the symbol Al. It is a silvery-white, lightweight metal that is commonly used in various industries due to its low density and high corrosion resistance. Aluminium is the third most abundant element in the Earth's crust and is widely used in the production of construction materials, electrical wiring, and packaging materials. Its properties make it a versatile and valuable material in many applications. Therefore, the correct answer for this question is Al, which is the chemical symbol for aluminium.
14.
Carbon
Correct Answer
C
Explanation
The correct answer is C because carbon is represented by the symbol C in the periodic table.
15.
Si
Correct Answer
Silicon
16.
Sn
Correct Answer
Tin
17.
Lead
Correct Answer
Pb
18.
Nitrogen
Correct Answer
N
Explanation
The correct answer is N because Nitrogen is the chemical symbol for the element nitrogen. In the periodic table, each element is represented by a unique symbol, and N is the symbol for nitrogen.
19.
Phosphorus
Correct Answer
P
Explanation
The correct answer is P because phosphorus is represented by the chemical symbol P.
20.
Arsenic
Correct Answer
21.
Oxygen
Correct Answer
22.
Sulfur
Correct Answer
S
Explanation
Sulfur is represented by the symbol S.
23.
F
Correct Answer
Fluroine
24.
Cl
Correct Answer
Chlorine
25.
Bromine
Correct Answer
Br
Explanation
Bromine is a chemical element with the symbol Br. It is a halogen and is found in the periodic table. The answer "Br" represents the symbol for bromine.
26.
Iodine
Correct Answer
I
Explanation
Iodine is a chemical element with the symbol I.
27.
Helium
Correct Answer
He
28.
Ne
Correct Answer
Neon
29.
Ar
Correct Answer
Argon
30.
Krypton
Correct Answer
Kr
31.
Xe
Correct Answer
Xenon
Explanation
Xe is the chemical symbol for the element Xenon. Therefore, the correct answer is Xenon, as it is the full name of the element represented by the symbol Xe.
32.
Rn
Correct Answer
Radon
Explanation
Radon is a chemical element with the symbol Rn. It is a radioactive, colorless, odorless, tasteless noble gas. Therefore, the correct answer is Radon.
33.
Cr
Correct Answer
Chromium
Explanation
Chromium is a chemical element with the symbol Cr. It is a hard, lustrous, steel-gray metal that is commonly used in the production of stainless steel and other alloys. Chromium has a high melting point and is resistant to corrosion, making it ideal for applications where durability and resistance to wear are important. It is also used in the production of pigments, dyes, and tanning agents. Overall, chromium is a versatile element with various industrial uses.
34.
Ti
Correct Answer
Titanium
35.
Mn
Correct Answer
Manganese
36.
Iron
Correct Answer
Fe
Explanation
The given answer "Fe" is the correct symbol for the element iron. Iron is a chemical element with the symbol Fe, derived from its Latin name "ferrum". It is a metal that is commonly found in the Earth's crust and has various industrial applications due to its strength and ability to form alloys.
37.
Co
Correct Answer
Cobalt
38.
Ni
Correct Answer
Nickel
39.
Cu
Correct Answer
Copper
Explanation
The given answer "Copper" is correct because "Cu" is the chemical symbol for copper. Copper is a reddish-brown metal that is a good conductor of electricity and is commonly used in electrical wiring, plumbing, and various industrial applications. Its symbol "Cu" comes from its Latin name "cuprum".
40.
Cadmium
Correct Answer
Cd
Explanation
Cadmium is a chemical element with the symbol Cd. The answer "Cd" is the correct symbol for cadmium.
41.
Silver
Correct Answer
Ag
42.
Gold
Correct Answer
Au
Explanation
The correct answer is "Au" because "Au" is the chemical symbol for gold. In the periodic table, chemical elements are represented by symbols, and "Au" is the symbol specifically assigned to gold.
43.
Pt
Correct Answer
44.
Zinc
Correct Answer
Zn
Explanation
Zinc is a chemical element with the symbol Zn. The given answer "Zn" is the correct symbol for zinc.
45.
Mercury
Correct Answer
Hg
46.
U
Correct Answer
Uranium
47.
Pu
Correct Answer
Plutonium