Which of the following is correct about ozone?

Which of the following is correct about ozone?

[A] it is a red coloured gas

[B] it is odourless

[C] it is harmless in small concentrations

[D] All of the above

Correct Answer: C [it is harmless in small concentrations]

Notes:

Pure ozone is a pale blue gas, dark blue liquid and violet-black solid. Ozone has a characteristic smell and in small concentrations it is harmless. However, if the concentration rises above about 100 parts per million, breathing becomes uncomfortable resulting in headache and nausea.

CHEMISTRY MCQs WITH ANSWER

1.Which of the following is correct about ozone?

2.Which of the following is an example of colloidal solution?

3.Which of the following is correct about Solder?

4.Which of these ores is not an oxide?

5. Which of the following methods is used to purify Titanium metal?

6.Which of the following is true about the Rutherford model of atoms?

7.What do we call the reactions in which there is an exchange of ions between the reactants?

8.Which of the following factors affect the rate of chemical reaction?

9.The Lanthanides are part of which of the following blocks of elements in the periodic table?

10.Which of the following elements has the largest atomic radii?

CHEMISTRY MCQs WITH ANSWER

1.Which of the following is the most commonly used chemical for ripening of mangoes in India?

2.The Alkali metals are called good reducing agents. This implies that

3.What is the common name of the analgesic and antipyretic drug acetylsalicylic acid?

4.Which among the following substances is most suitable for making Compact Discs?

5.“Oil of mirbane” is the most common name of which among the following?

6.Which among the following is a major component of Gobar Gas?

7.After a nuclear disaster, the Strontium-90 became a health issue of great concern. What is the major concern about this particular isotope?

8. What is the fourth state of matter called?

9.What is the name given to the linear strain produced in the direction of deforming force?

10.What is the fourth state of matter called?

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