19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which of the following is correct regarding salt of oxo- acids of alkali metals?
Which of the following is known molecular formula of washing soda?
Similarity between lithium and magnesium is particularly stricken and arises because of their
Choose the incorrect statement out of the following
Alkali metal nitrates decomposes to produce …X… while lithium nitrate on heating decomposes to corresponding …Y… Here, Y and Y refer fo
On combustion in excess of air lithium forms mainly …X… sodium forms …Y… while potassium forms …Z…Here, X, Y and Z refer to
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
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…
The alkali metal oxides dissolve in water to produce
Which of the following exist as decahydrate?
Lithium halides are somewhat …A… It is because …B… value of polarization capability of lithium ion. Here, A and B refer to
Alkali metals dissolve in liquid ammonia and produces
The oxidation state of K in KO₂ is …A… and the bonding type is …B… Here, A and B refer to
When sodium is dissolved in liquid ammonia is solution of deep blue colour is obtained. The colour of solution is due to
Which of the following metal salt is mostly hydrated?
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.…
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…
…A… is used in devising photoelectric cells. Here, A refer to
Alkali metals readily …X… electron to give monovalent M+ ion. Here, X refer to
…A… has maximum degree of hydration. Here, A refers 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 …
Which of the following statements(s)is/are correct regarding sodium hydroxide? I. It is white and translucent. II. It melts at 591K. III. It is non-deliquescent IV. It is soluble in water and its aqueous solution is h…
Which of the following is used in the preparation of cakes or pastries?
The formula of soda ash is
Which of the following ion is most abundant within cell fluid?