19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The alkali metal oxides dissolve in water to produce
Which of the following statement (s) is/are correct regarding alkali metal halides? I. They possess high melting point and are crystalline in nature. II. They are prepared by reaction of appropriate oxides with aqueou…
What will be the product when ammonium chloride is treated with calcium hydroxide?
What approximate amount of ATP is used by a resting human in 24 hours?
Choose the correct statements (s) regarding lithium and alkali metals I. Lithium is much harder. Its m.p and b.p are higher than other alkali metals. II. Lithium is highly reactive and strongest reducing agent in comp…
Alkali metal nitrates decomposes to produce …X… while lithium nitrate on heating decomposes to corresponding …Y… Here, Y and Y refer fo
Anomalous behavior of lithium is due to I. exceptionally small size of its atom II. High polarizing power. III. High Charge Radius ratio. Choose the correct option
Similarity between lithium and magnesium is particularly stricken and arises because of their
When sodium is dissolved in liquid ammonia is solution of deep blue colour is obtained. The colour of solution is due to
…A… is used in devising photoelectric cells. Here, A refer to
Match the Column I and Column II and choose the correct option from the codes give below. Column I Column II A. Potassium 1. Soft soap B. Potassium chloride 2. Fertilizer C. Potassium hydroxide 3. Photoelectric cells …
Choose the incorrect statement out of the following
Choose the correct statements(s) among the following. I. Alkali metal is highly reactive. II. Alkali metal has lowest ionization enthalpy among their respective period. III. Ionization energy of alkali metals increase…
The oxidation state of K in KO₂ is …A… and the bonding type is …B… Here, A and B refer to
Choose the correct option from the codes given below regarding elements and their characteristics colour given in Column I and II of the following table. Column I Column II A. Li 1. Crimson red B. Na 2. Yellow C. K 3.…
Lithium halides are somewhat …A… It is because …B… value of polarization capability of lithium ion. Here, A and B refer to
Which of the following metal salt is mostly hydrated?
Alkali metals dissolve in liquid ammonia and produces
On combustion in excess of air lithium forms mainly …X… sodium forms …Y… while potassium forms …Z…Here, X, Y and Z refer to
Ground state valence shell electronic configuration of barium is
Alkali metals readily …X… electron to give monovalent M+ ion. Here, X refer to
…A… has maximum degree of hydration. Here, A refers to
The atomic and ionic radii of the alkaline earth metals are …A… than those of the corresponding alkali metals in the corresponding period Here, A refers to
Which of the following is correctly order regarding hydration enthalpies of alkaline earth metals?
Which of the following is correctly represented according to their existence? I. MgCl₂ .6H₂O II. NaCl. 6H₂O III. KCl. 6H₂O IV. CaCl₂. 6H₂O