19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
On combustion in excess of air lithium forms mainly …X… sodium forms …Y… while potassium forms …Z…Here, X, Y and Z refer to
Which of the following choice(s) represents(s) physical properties of alkali metals?
Which of the following is an amphoteric hydroxide? (NEET 2019)
HCl was passed through a solution of CaCl₂, MgCl₂ and NaCl. Which of the following compound(s) crystallise(s)? (NEET 2020)
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)
The ionic mobility of alkali metal ions is aqueous solution is maximum for (RPMT 2010)
Gypsum on heating to 390 K gives. (RPMT 2010)
Epsom salt is (RPMT 2010)
Crude sodium chloride obtained by crystallisation of brine solution does not contain (Odisha NEET 2019)
Identify the incorrect statement from the following (NEET 2022)
The diagonal relationship of elements arises due to the similarity in
Alkali metals show regular trend in their physical and chemical properties with the
All alkaline metals have …A… valence electrons(s). Here, A refer to
In the reaction, 2IO xSO 4H O 5SO 8H I → The coefficient of SO₂ in balanced equation is
In the redox reaction, xKMnO NH yKNO MnO KOH H O → x and y are
In the following redox equation, 2+ 2- + 2+ 3+ 2 7 xUO +Cr O +yH aUO +zCr +bH O → the value of coefficients x, y and z respectively, are
In the balanced chemical reaction IO aI bH cH O dI → a, b, c and d respectively, correspond to
aK Cr O bKCl cH SO → xCrO Cl yKHSO zH O The above equation balances when