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1.
Which of the following reacts with cold water vigorously?
2.
Which of the following non-metals has shining lustrous surfaces?
3.
A non-metal that catches fire at room temperature is-
4.
Which are the most abundant elements in the universe?
5.
What is the colour of oxygen in solid state?
6.
Why is nitrogen molecule chemically less active?
7.
Yellow colour of usual nitric acid is due to the presence of which one of the following?
8.
Which one of the following elements cannot displace hydrogen gas from a dilute acid?
9.
Which of the following is not a nitrogenous fertilizer?
10.
Which one of the following is the correct order in which the gases H2,Ne,O2 and N2are evolved on fractional distillation of liquid air?