1.
What is the name of this element?
Correct Answer
A. Aluminum
Explanation
The correct answer is aluminum.
2.
The atomic number of helium is 1.
Correct Answer
B. False
Explanation
The atomic number of helium is actually 2, not 1. The atomic number represents the number of protons in the nucleus of an atom. Since helium has 2 protons, its atomic number is 2.
3.
Which of the following is the symbol of lithium?
Correct Answer
B. Li
Explanation
The symbol for lithium is Li.
4.
What element has an atomic number of 2?
Correct Answer
B. Helium
Explanation
Helium has an atomic number of 2. The atomic number represents the number of protons in the nucleus of an atom. Since helium has an atomic number of 2, it means that it has 2 protons. This is a unique characteristic of helium and distinguishes it from other elements. Hydrogen, magnesium, and boron have different atomic numbers and therefore cannot be the correct answer.
5.
What is the composition of this element?
Correct Answer
A. Chromium
Explanation
Chromium is a chemical element with the symbol Cr and atomic number 24. It is a hard, lustrous, steel-gray metal that is commonly used in the production of stainless steel and other alloys. Chromium is known for its corrosion resistance and high melting point, making it suitable for various industrial applications. It is also used in the manufacturing of pigments, dyes, and tanning agents.
6.
The symbol for mercury is Hg.
Correct Answer
A. True
Explanation
The symbol for mercury is Hg. This statement is true. Hg is the chemical symbol for mercury, derived from its Latin name "hydrargyrum."
7.
Which of the following is the meaning of the symbol Ag?
Correct Answer
B. Silver
Explanation
The symbol Ag represents the element silver on the periodic table. Silver is a lustrous, white metal that is known for its high electrical and thermal conductivity. It is commonly used in jewelry, coins, and electrical components. Therefore, the correct meaning of the symbol Ag is silver.
8.
Electrical wiring is commonly made of what element?
Correct Answer
C. Copper
Explanation
Copper is commonly used in electrical wiring because it is an excellent conductor of electricity. It has low resistance, allowing for efficient flow of electrical current. Copper is also durable, malleable, and corrosion-resistant, making it a reliable choice for wiring installations. Additionally, copper has good thermal conductivity, which helps in dissipating heat generated during electrical operations. Overall, copper's electrical and physical properties make it the preferred element for electrical wiring in residential, commercial, and industrial applications.
9.
This is made of chromium.
Correct Answer
B. False
Explanation
The statement "This is made of chromium" is false. It implies that the object in question is composed of chromium, which is not supported by any evidence or context provided.
10.
Which of the following is the symbol for gold?
Correct Answer
C. Au
Explanation
The symbol for gold is Au.
11.
What is the symbol of the element sodium?
Correct Answer
C. Na
Explanation
The symbol of the element sodium is Na.
12.
Cu is the symbol of chromium.
Correct Answer
B. False
Explanation
The given statement is false. Cu is not the symbol of chromium. The correct symbol for chromium is Cr.
13.
Which of the following is the symbol of silicon?
Correct Answer
B. Si
Explanation
Silicon is a chemical element with the symbol Si. The symbol for silicon is Si, which is why the correct answer is Si.
14.
What is the symbol of sulfur?
Correct Answer
A. S
Explanation
The symbol of sulfur is S.
15.
What is represented by this element?
Correct Answer
C. Beryllium
Explanation
Beryllium is represented by this element.
16.
What element is inside the vial?
Correct Answer
C. Tungsten
Explanation
Tungsten is the element inside the vial.
17.
Which of the following is the symbol of oxygen?
Correct Answer
A. O
Explanation
The symbol for oxygen is O.
18.
The symbol of nitrogen is Ni.
Correct Answer
B. False
Explanation
The symbol of nitrogen is not Ni, but rather N. The symbol Ni actually represents the element nickel.
19.
The symbol of neon is Ne.
Correct Answer
A. True
Explanation
Neon is a chemical element with the symbol Ne and atomic number 10. It is a noble gas and is found in small amounts in the Earth's atmosphere. The symbol "Ne" is widely recognized and accepted as the chemical symbol for neon. Therefore, the statement "The symbol of neon is Ne" is true.
20.
Which of the following is the complete name of Sir Riz
Correct Answer
C. Lorizty Lo Calingacion
Explanation
The complete name of Sir Riz is Lorizty Lo Calingacion.