19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Alkali metals are kept in kerosene oil. Which of the following reason (s) is/are correct regarding this statements?
Which of the following elements(s) form stable superoxide?
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 element(s) is used as useful electrode(s) in photoelectric cells?
Alkali metals can be detected by their respective …A… Here, A 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.…
The alkali metals and their salts show characteristics colour to
Along the group in alkali metals the density
Which of the following choice(s) represents(s) physical properties of alkali metals?
Which of the following metal salt is mostly hydrated?
…A… has maximum degree of hydration. Here, A refers to
The correct decreasing order of ionization enthalpy in alkali metals is
The ionization enthalpies of alkali metals are considerably
Atomic and ionic radii of alkali metals …X… on moving down the group. Here, X refer to
Monovalent ions are …A…than parent atom. Here, A refers to
Alkali metals have …X… size in a particular period. Here, X refer to
Alkali metals readily …X… electron to give monovalent M+ ion. Here, X refer to
All alkaline metals have …A… valence electrons(s). Here, A refer to
Alkali metals show regular trend in their physical and chemical properties with the
The diagonal relationship of elements arises due to the similarity in
Which of the following shows diagonal relationship?
…X and …Y…Shown diagonal similarity. Here, X and Y refer to
Which of the following does not belong to alkaline earth metal?
Among the alkali metals …A and …B… are relatively more abundant in nature. Here A and B refer to
Group II elements with exceptions of beryllium are known as alkaline earth metals. These are so called because their …A…and …B… are alkaline in nature. Here, A and B refer to