9th Class Chemistry Chapter 12 TestEmpirical Data Collection and Analysis

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

1. Which of the following pair of quantities may be measured in the same unit?

   1. Heat and temperature

   2. Temperature and area

   3. Heat and work 

   4. Length and work

2. The property of a measuring instrument to give the output very close to the actual value is termed as:

   1. Sensitivity

   2. Accuracy

   3. Precision

   4. Repeatability

3. In the measuring instrument, the degree of conformity and closeness to the true value is known as:

   1. Precision

   2. Accuracy

   3. Sensitivity

   4. Compatibility

4. One tera is equal to:

   1. 10^-12

   2. 10^-18

   3. 10¹²

   4. 10¹⁸

5. A distance of 1 kilometer means?

   1. 

   2. 

   3. 

   4. 

6. Which one of the following is the smallest quantity?

   1. 

   2. 

   3. 

   4. 

7. Which type of unit are used almost everywhere in the world?

   1. Systematic units

   2. Derived and systematic

   3. SI units

   4. None of these

8. 65^oC is equivalent to:

   1. 

   2. 

   3. 

   4. 

9. In SI units prefix nano means:

   1. 10^-9

   2. 10^-8

   3. 10^-11

   4. 10^-12

10. What does a mole represent?

    1. Number

    2. Mass

    3. Volume

    4. Length