Most of the Boards of Education have banned the dissection of animals because _____.
Important Questions on Teaching Methods of Science
Given below are the steps to test the presence of proteins in a food item. These steps are not in correct sequence:
1. Take a small quantity of food item in a test tube add 10 drops of water to it and shake it.
2. Make the paste or powder of the food to be tested.
3. Add 10 drops of caustic soda solution to the test tube and shake well.
4. Add 2 drops of copper sulphate to it.
The correct sequence of these steps is:
While teaching the correct method of using a spring balance to Class VIII students, Gunjan mentions the following steps (not incorrect sequence) to be followed.
1. Note the zero error.
2. Calculate the actual reading.
3. Note the position of pointer on the graduated scale.
4. Record the least count of the spring balance.
Which one of the following is the correct sequence of the steps to be followed for the said purpose?
While teaching the correct method of measuring the volume of a solid using a measuring cylinder, Kavita mentions the following steps (not incorrect sequence) to be followed:
1. Note the reading of the level of water in the cylinder.
2. Suspend the solid with a thread inside water in the cylinder.
3. Record the least count of the measuring cylinder.
4. Put sufficient water in the cylinder and note the reading.
Which one of the following is the correct sequence of steps for the said purpose?
