With what metal, chocolates, cigarettes etc. are wrapped ?
What is the colour of diamond, when pure ?
Why is an echo not heard in a small room ?
Is water element or compound ?
What are the constituents of cements?
Why is estimation of copper done at 620 nm wave length?
Why are the titration involving edta carried out slowly towards the end point?
Explain the Chemical change?
Why is the color of the indicator drop remains the same at the end point?
Explain the ANS Isotope?
When we heat one end of and iron bar, the other end also gets heated up why ?
Why ph scale range is 14? Why it is not less or not greater than 14? Solution of hcl or hydrogen containing liquid has a ph. But if the solution is kmno4 here nothydrogen power does it ph?
A balloon constructed in Calcutta during July-August was found to show cracks at most wooden joints when received at Ferozepore in December. What is the probable cause ?