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JEE 2020 Chemistry : Hydrogen and s Block Element (05.08.2019)

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Question 1

The hydride ion H^- has the same electron configuration as helium but is much less stable. Which of the following option explains the given statement

Question 2

Which of the following is incorrect statement?

Question 3

Balance the following reaction, where X,Y,Z,P,Q are corresponding stoichiometric coefficient, and find the correct option.
X Ca₃(PO₄)₂+ Y SiO₂ +Z C → P CaSiO₃ + Q CO + P₄

Question 4

Which of the following is correct regarding thermal stability?

Question 5

Salt (A) + S → B

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A is paramagnetic. Thus A is

Question 6

Which of the following alkaline earth metal hydroxides is the strongest base?

Question 7

The thermal stability of alkaline earth metal carbonates MgCO₃, CaCO₃, BaCO₃ and SrCO₃ decreases as

Question 8

Heavy water on slow reaction with alkali metals and alkaline earth metals forms

Question 9

Which of the following depicts correct order of basic strength of hydroxides?

Question 10

Elements in diagonal relationship show similar properties because of

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Mar 31JEE & BITSAT