19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
On moving top to bottom among a group the correct trend of hydration enthalpies for alkali metal ions is
What will be the oxidation state of nitrogen and alkali metal when the nitrogen and alkali metal react with each other?
Which of the following is/are correct pair(s) regarding diagonally related elements?
Hydrogen carbonate of lithium doesn’t exist in solid state due to
Identify the incorrect statement from the following (NEET 2022)
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…
[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
Group II elements with exceptions of beryllium are known as alkaline earth metals. These are so called because their …A…and …B… are alkaline in nature. Here, A and B refer to
Magnesium reacts with an element (X) to form an ionic compound. If the ground state electronic configuration of (X) is 1s2 2s2 2p3, the simplest formula for this compound is (NEET 2018)
Which of the alkali metal chloride (MCl) forms its dihyrate salt (MCl.2H₂O) easily? (Odisha NEET 2019)
Among CaH₂, BeH₂, BaH₂, the order of ionic character is (NEET 2018) (a) CaH BeH BaH (b) BeH BaH CaH (c) BeH CaH BaH (d) BaH BeH CaH
Crude sodium chloride obtained by crystallisation of brine solution does not contain (Odisha NEET 2019)
Which one of the following is present an an active ingredient in bleaching powder for bleaching action? (AIPMT 2011)
Which of the following compounds has the lowest melting point? (AIPMT 2011)
In context with beryllium, which one of the following statements is incorrect? (NEET 2016)
Which of the following is an amphoteric hydroxide? (NEET 2019)
Epsom salt is (RPMT 2010)
Molecular formula of Glauber’s salt is (JCECE 2010)
Which of the following alkaline earth metal sulphates is least soluble in water? (Haryana PET 2010)
HCl was passed through a solution of CaCl₂, MgCl₂ and NaCl. Which of the following compound(s) crystallise(s)? (NEET 2020)
Among the alkali metals …A and …B… are relatively more abundant in nature. Here A and B refer to
Which of the following does not belong to alkaline earth metal?
…X and …Y…Shown diagonal similarity. Here, X and Y refer to
Which of the following shows diagonal relationship?
Among the following element the non-radioactive elements(s) is/are