Chemical Reactions and Equation [NSO Level 1- Science Olympiad (SOF) Class 10]: Questions 1 - 7 of 114
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Question 1
Question MCQ▾
In the balanced equation
The value of the a, b, c and d, are respectively
Choices
Choice (4) | Response | |
---|---|---|
a. | 1,1, 2,3 | |
b. | 2,3, 4,3 | |
c. | 1,2, 2,3 | |
d. | 1,3, 2,3 |
Question 2
Question MCQ▾
Iron rusts more quickly in contact with_
Choices
Choice (4) | Response | |
---|---|---|
a. | Copper | |
b. | Zinc | |
c. | Potassium | |
d. | Calcium |
Question 3
Question MCQ▾
Which of the following is not a single displacement reaction?
Choices
Choice (4) | Response | |
---|---|---|
a. | ||
b. | ||
c. | ||
d. |
Question 4
Question MCQ▾
What will happen if ammonium chloride is heated?
Choices
Choice (4) | Response | |
---|---|---|
a. | Explosion will occur. | |
b. | Ammonium chloride will sublime on test tube | |
c. | Releases | |
d. | All of the above |
Question 5
Question MCQ▾
What does the color of the change when heated?
Choices
Choice (4) | Response | |
---|---|---|
a. | Colorless | |
b. | Dark blue | |
c. | Black | |
d. | None of the above |
Question 6
Question Match List-Ⅰ List-Ⅱ▾
Match both the columns and mark the correct option from the codes given below.
List-Ⅰ (Column I) | List-Ⅱ (Column II) |
---|---|
(A) | (i) Combination |
(B) | (ii) Decomposition |
(C) | (iii) Single displacement |
(D) | (iv) Double Displacement |
Choices
Choice (4) | Response | |
---|---|---|
| ||
a. |
| |
b. |
| |
c. |
| |
d. |
|
Question 7
Question Match List-Ⅰ List-Ⅱ▾
Match both the columns and mark the correct option from the codes given below.
List-Ⅰ (Column I) | List-Ⅱ (Column II) |
---|---|
(A) Reduction reaction | (i) Decreasing the oxidation number |
(B) Oxidation reaction | (ii) Increasing the oxidation number |
(C) Redox reaction | (iii) |
Choices
Choice (4) | Response | |
---|---|---|
| ||
a. |
| |
b. |
| |
c. |
| |
d. | All of the above |