Nickel-Chromium alloy is used in heating coils and electric furnaces because:

it resists corrosion even it is hot

it has high resistance to electric current

it produces high amount of heat

it consume a small amount of energy to produce heat

Which of the following is used in the manufacture of cosmetics?

Manganese dioxide , Titanium dioxide

Vanadium pentoxide , Manganese sulphate

Scandium is used in the manufacture of Git fighter due to:

it has low density and high hardness

it keeps its strength at elevated temperatures

it gives steel hardness and corrosion resistance

it resists the effect of atmosphere

Cobalt-60 is used in quality control and treating cancer.

as it produces ultrasonic waves

Chemistry Exam: Quiz Questions!

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| By Usama Said

Usama Said

Community Contributor

Quizzes Created: 1 | Total Attempts: 107

Questions: 10 | Attempts: 107 | Updated: Mar 21, 2023

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Are you ready for your chemistry exam? Chemistry is the research of the matter, energy, and the relationship between them. Chemists become encouraged when they figure out how a chemical transformation occurs. It plays a crucial role in science, and it plays an essential role in daily life activities. Chemistry is also involved in the production of food and healthcare products. This quiz will get you excited about chemistry.

Questions and Answers

1.

Four elements A, B, C, and D: the element (A) used as a catalyst in the preparation of Ammonia gas in industry, one of the compounds of the element (B) used as an oxidizing agent in the dry cell, the element (C) used in the manufacture of heating coils and element (D) is the first discovered metal. Based on the previous information, the correct arrange of these four elements will be:
- A.
  
  Fe-Ni-Cu-Mn
- B.
  
  Mn-V-Fe-Zn
- C.
  
  V-Zn-Mn-Fe
- D.
  
  Fe-Mn-Ni-Cu
Correct Answer
D. Fe-Mn-Ni-Cu

Explanation
The correct arrangement of the four elements based on the given information is Fe-Mn-Ni-Cu. Element A is used as a catalyst in the preparation of Ammonia gas, which is iron (Fe). Element B is used as an oxidizing agent in dry cells, which is manganese (Mn). Element C is used in the manufacture of heating coils, which is nickel (Ni). Finally, element D is the first discovered metal, which is copper (Cu).

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2.

The element or the compound or the alloy used in obtaining pure drinkable water in deserts.
- A.
  
  Copper
- B.
  
  Copper (II) sulphate
- C.
  
  Potassium permenganate
- D.
  
  Cobalt 60
Correct Answer
B. Copper (II) sulphate

Explanation
Copper (II) sulphate can be used to obtain pure drinkable water in deserts. Copper (II) sulphate is a compound that has antimicrobial properties, which means it can kill or inhibit the growth of microorganisms such as bacteria and algae. When added to water, it can help in disinfecting and purifying it, making it safe for drinking. This compound is commonly used in water treatment processes to remove impurities and ensure the water is safe for consumption.

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3.

What is the suitable alloy for the manufacture of Juice containers?
- A.
  
  Iron-Aluminum
- B.
  
  Aluminum-Copper
- C.
  
  Manganese-Aluminum
- D.
  
  Iron-Manganese
Correct Answer
C. Manganese-Aluminum

Explanation
Manganese-Aluminum is the suitable alloy for the manufacture of juice containers because it provides good corrosion resistance and is lightweight. Manganese improves the strength and hardness of aluminum, making it more durable and suitable for holding liquids. Additionally, the combination of manganese and aluminum ensures that the alloy is resistant to acidic substances often found in juices, preventing any unwanted reactions or contamination.

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4.

Nickel-Chromium alloy is used in heating coils and electric furnaces because:
- A.
  
  It resists corrosion even it is hot
- B.
  
  It has high resistance to electric current
- C.
  
  It produces high amount of heat
- D.
  
  It consume a small amount of energy to produce heat
Correct Answer
A. It resists corrosion even it is hot

Explanation
Nickel-Chromium alloy is used in heating coils and electric furnaces because it resists corrosion even when it is exposed to high temperatures. This is important in these applications as the coils and furnaces are subjected to extreme heat, which can cause other materials to corrode and degrade. By using a Nickel-Chromium alloy, the coils and furnaces can maintain their integrity and performance over time, making them more durable and reliable.

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5.

Which of the following compounds are used in the painting?
- A.
  
  ZnO / K₂Cr₂O₇ / MnO₂
- B.
  
  Cr₂O_{3 /}V₂O_{5 /}ZnO
- C.
  
  CuSO₄ / ZnO / Cr₂O₃
- D.
  
  Option 4
- E.
  
  K₂Cr₂O₇ / KMnO₄ / ZnO
Correct Answer
B. Cr₂O_{3 /}V₂O_{5 /}ZnO

Explanation
The correct answer is Cr2O3 / V2O5 / ZnO. This is because Cr2O3 (chromium(III) oxide) and V2O5 (vanadium(V) oxide) are commonly used as pigments in paints, providing various colors such as green and yellow. ZnO (zinc oxide) is also used as a white pigment in paints. Therefore, these compounds are commonly used in the painting process.

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6.

Which of the following is used in the manufacture of cosmetics?
- A.
  
  Zinc oxide , Titanium dioxide
- B.
  
  Manganese dioxide , Titanium dioxide
- C.
  
  Vanadium pentoxide , Manganese sulphate
- D.
  
  Chromium trioxide , Zinc oxide
Correct Answer
A. Zinc oxide , Titanium dioxide

Explanation
Zinc oxide and titanium dioxide are commonly used in the manufacture of cosmetics. Zinc oxide is used as a sunscreen agent and provides protection against both UVA and UVB rays. Titanium dioxide is also used as a sunscreen agent and helps to block harmful UV rays. Both of these ingredients are safe for use in cosmetics and are often found in sunscreens, foundations, and other skincare products.

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7.

Which of the following are used as an oxidizing agent?
- A.
  
  KMnO₄ / Cr₂O₃ / V₂O₅
- B.
  
  MnO_{2 /}MnSO_{4 /}K₂Cr₂O₇
- C.
  
  CuSO_{4 /}V₂O_{5 /}MnSO₄
- D.
  
  K₂Cr₂O₇ / MnO₂ / KMnO₄
Correct Answer
D. K₂Cr₂O₇ / MnO₂ / KMnO₄

Explanation
K2Cr2O7, MnO2, and KMnO4 are all commonly used as oxidizing agents. They have the ability to accept electrons from other substances, causing them to be oxidized. K2Cr2O7, also known as potassium dichromate, is a strong oxidizing agent that is commonly used in laboratory settings. MnO2, or manganese dioxide, is another powerful oxidizing agent that is often used in chemical reactions. KMnO4, or potassium permanganate, is a purple-colored compound that is widely used as an oxidizing agent in various applications, including water treatment and organic synthesis.

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8.

Which of the following is used as a fungicide?
- A.
  
  ZnS , MnSO₄
- B.
  
  CuSO₄, MnSO₄
- C.
  
  ZnS, CuSO₄
- D.
  
  CuSO₄
- E.
  
  None
Correct Answer
B. CuSO₄, MnSO₄

Explanation
Both CuSO4 (copper sulfate) and MnSO4 (manganese sulfate) are commonly used as fungicides. They are effective in controlling fungal diseases on plants by inhibiting the growth and reproduction of fungi. CuSO4 acts by disrupting the cell membrane of the fungi, while MnSO4 helps in activating enzymes that can suppress fungal growth. Therefore, the correct answer is CuSO4, MnSO4.

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9.

Scandium is used in the manufacture of Git fighter due to:
- A.
  
  It has low density and high hardness
- B.
  
  It keeps its strength at elevated temperatures
- C.
  
  It gives steel hardness and corrosion resistance
- D.
  
  It resists the effect of atmosphere
Correct Answer
A. It has low density and high hardness

Explanation
Scandium is used in the manufacture of Git fighters because it has low density and high hardness. These properties make it ideal for creating lightweight yet strong materials, which are crucial in aerospace applications. The low density allows the fighter to be more fuel-efficient, while the high hardness ensures durability and resistance to wear and tear.

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10.

Cobalt-60 is used in quality control and treating cancer.
- A.
  
  As it s a radioactive element
- B.
  
  As it emits alpha rays
- C.
  
  As it emits gamma radiation
- D.
  
  As it produces ultrasonic waves
Correct Answer
C. As it emits gamma radiation

Explanation
Cobalt-60 is used in quality control and treating cancer because it emits gamma radiation. Gamma radiation is a high-energy form of electromagnetic radiation that can penetrate through materials and kill cancer cells. It is also used in quality control processes because it can be easily detected and measured, allowing for accurate testing and analysis.

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Current Version
Mar 21, 2023

Quiz Edited by
ProProfs Editorial Team
Oct 04, 2020

Quiz Created by
Usama Said

Chemistry Exam: Quiz Questions!

The element or the compound or the alloy used in obtaining pure drinkable water in deserts.

What is the suitable alloy for the manufacture of Juice containers?

Nickel-Chromium alloy is used in heating coils and electric furnaces because:

Which of the following compounds are used in the painting?

Which of the following is used in the manufacture of cosmetics?

Which of the following are used as an oxidizing agent?

Which of the following is used as a fungicide?

Scandium is used in the manufacture of Git fighter due to:

Cobalt-60 is used in quality control and treating cancer.