19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which of the following is/are correct pair(s) regarding diagonally related elements?
[X] and [Y] are two nitrates of alkali metals [X] and [Y] on decomposition produces oxides and nitrites respectively. Here, [X] and [Y] refer to
Which one of the following has magnesium?
A chemical (A) is used for the preparation of washing soda to recover ammonia. When CO₂ is bubbled through an aqueous solution of A, the solution turns milky. It is used white washing due to disinfectant nature. What …
Assertion (A): Ba, Ca and Sr produces individual characteristic colour to flame test. Reason (R): this is due to excitation of loosely held electrons from outermost orbit to excited state of orbital.
Property of the alkaline earth metals that increases with their atomic number
Which of the following statements(s) is/are incorrect regarding the s-block elements? I. Francium is highly radioactive element. II. Oxides and hydroxides of alkali metals and alkaline earth metals are not alkaline in…
Which of the following metal do not form salt with ethyne?
Choose the incorrect statement among the following.
Along the group atomic and ionic radii are …X… and along the period atomic and ionic radii are …Y… Here, X and Y refer to
The correct reason for smaller size of alkaline earth metal than that of alkali metal is that
Why lithium compound are soluble in organic solvent?
The most electropositive alkali metal is
Which of he following is/are less soluble in water? LiF, CsI, NaCl, KCl
On moving top to bottom the negative value of formation …A… for fluoride of alkali metals. Here, A refer to
Which of the following order is correct regarding electropositive character of alkaline earth metals?
In concentrated solution, the colour of alkali metals in liquid ammonia is
Along the group atomic and ionic radii are …X… and along the period atomic and ionic radii are …Y… Here, X and Y refer to
The correct reason for smaller size of alkaline earth metal than that of alkali metal is that
Which of the following order is correct regarding electropositive character of alkaline earth metals?
Which of the following metal do not form salt with ethyne?
Assertion (A): Ba, Ca and Sr produces individual characteristic colour to flame test. Reason (R): this is due to excitation of loosely held electrons from outermost orbit to excited state of orbital.
Property of the alkaline earth metals that increases with their atomic number
Chemical clinker can be obtained by the reaction of
Choose the incorrect statement among the following.