19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Among the alkali metals …A and …B… are relatively more abundant in nature. Here A and B refer to
Atomic and ionic radii of alkali metals …X… on moving down the group. Here, X refer to
In context with beryllium, which one of the following statements is incorrect? (NEET 2016)
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
Which of the following compounds has the lowest melting point? (AIPMT 2011)
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)
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)
Which one of the following is present an an active ingredient in bleaching powder for bleaching action? (AIPMT 2011)
Which of the alkali metal chloride (MCl) forms its dihyrate salt (MCl.2H₂O) easily? (Odisha NEET 2019)
Which of the metal carbonates is decomposed on heating? (MP PMT 2010)
The ionic mobility of alkali metal ions is aqueous solution is maximum for (RPMT 2010)
Washing Soda is (MP PMT 2010)
Gypsum on heating to 390 K gives. (RPMT 2010)
Lithium halides are somewhat …A… It is because …B… value of polarization capability of lithium ion. Here, A and B refer to
What will be the product when ammonium chloride is treated with calcium hydroxide?
Epsom salt is (RPMT 2010)
Crude sodium chloride obtained by crystallisation of brine solution does not contain (Odisha NEET 2019)
The ionization enthalpies of alkali metals are considerably
Beryllium has …A… Property from rest of alkaline earth metals and show diagonal relationship with …B… Here, A and B refer to
In the equation NO H O NO 2H ne → n stands for
An element exhibits an oxidation state -2. How many electrons are present in its outer shell?
The oxidation state of C in diamond is
The oxidation number of C in HNC is
An element that never has a positive oxidation state in any of its