Why can you feel a pulse when you keep a finger on the wrist or neck but not when you keep them on a vein?

Rub your palms against each other and put them on your cheeks. What do you feel?

can you recall. What is shape of ClF_3

Produce a sound 'bho…bho…' just like a dog-barking and 'meow…meow…' just like a mewing cat. Carefully notice the tension on the vocal cords, when you produce these sounds. Do you feel that the tension on the vocal cords changes when you produce these two different sounds?

What are the various energy transformations that occur when you are running?

Give reasons : Why does your mother put folded cloth strips soaked in cold water on your forehead when you have high fever ?

Consider the following statement. When jumping from some height, you should bend your knees as you come to rest instead of keeping your legs stiff. Which of the following relations can be useful in explaining the statement?

What will you do to keep the water flowing for a longer duration?

You are inside a closed capsule from where you are not able to see anything about the outside world. Suddenly you feel that you are pushed towards your right. Can you explain the possible cause (s)? Is it a feeling or a reality? Give at least one more situation like this.

When can you say that the work done is either positive, negative or zero?