What does this Rebus Picture mean?

Tell me the Hindi name of a Vegetable which if we remove 1st word will become a precious Stone and by removing the last word it will become a sweet eatable.

You can win me and lose me but never buy me
You can not eat me and never want to part with me
I can make you cry or bring you joy
I am not a machine and definitely not a toy
You keep me but i am not forever just yours
You might find me in a case or on a shelf next to a vase
I am hard and i am tall if you bump me i am sure to fall
I am made of different materials and am at many events
If your lucky and fight hard I might be yours
What am I ?

Find The Next Number in the series:

12 13 15 17 111 113 117 119 123 ?

It is deaf, Dumb and Blind!!!

Still, always tells the truth. What is it?

There is a square of a particular number which when doubled, becomes 7 more than its quarter.

Can you find the number?

what does the below rebus mean?

Can you solve the maths in the below-given picture equation?

I have no life, but I can die. What am I?

Which is faster, Heat or Cold ? Explain.