Question
Which one of the following is known as the brown
coal?Solution
The correct answer is D
Which chemical compound is used in the indelible ink for elections?
Aqua regia, which can dissolve gold, is a freshly prepared mixture of concentrated hydrochloric acid and concentrated ______.
"Schist" is the example of which type of rock?
Analyze these statements about a buffer solution:
(I) A buffer solution stabilizes pH levels when small amounts of acids or bases are introduced....
Based on the periodic trends for ionization energy, which element has the highest ionization energy?
Which of the following dyes is used for colouring Paper and typewriters?
Which of the following elements has the highest electronegativity.
What is the chemical name of bleaching powder?
Lexan is a man-made polymer used for making
Which element dominates the Earth's crust by percentage?
