19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
The correct decreasing order of ionization enthalpy in alkali metals is
…A… has maximum degree of hydration. Here, A refers to
Which of the following metal salt is mostly hydrated?
Which of the following choice(s) represents(s) physical properties of alkali metals?
Along the group in alkali metals the density
The low melting point of alkali is due to
The alkali metals and their salts show characteristics colour 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.…
Alkali metals can be detected by their respective …A… Here, A refer to
Which of the following element(s) is used as useful electrode(s) in photoelectric cells?
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 incre…
Which of the following elements(s) form stable superoxide?
Alkali metals are kept in kerosene oil. Which of the following reason (s) is/are correct regarding this statements?
Alkali metal nitrates decomposes to produce …X… while lithium nitrate on heating decomposes to corresponding …Y… Here, Y and Y refer fo
Similarity between lithium and magnesium is particularly stricken and arises because of their
Lithium and magnesium oxides and hydroxides are …X… soluble in water. Here, X refers to
Choose the incorrect statement out of the following
On combustion in excess of air lithium forms mainly …X… sodium forms …Y… while potassium forms …Z…Here, X, Y and Z refer to
Sodium …X… is widely used as a/an …Y…. Here, X and Y refer to
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 aque…
Choose the correct statement/statement out of the following (a) f H always became less negative on moving top to bottom for alkali halides (b) f H always becomes less negative from fluoride to iodide for alkali me…
The correct trend of melting point and boiling point of alkali metal halides
Low solubility of LiF in water is due to …A… Here, A refer to
Which of the following exist as decahydrate?