19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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…
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…
The alkali metal oxides dissolve in water to produce
Sodium …X… is widely used as a/an …Y…. Here, X and Y refer to
On combustion in excess of air lithium forms mainly …X… sodium forms …Y… while potassium forms …Z…Here, X, Y and Z refer to
Choose the incorrect statement out of the following
Lithium and magnesium oxides and hydroxides are …X… soluble in water. Here, X refers to
Similarity between lithium and magnesium is particularly stricken and arises because of their
Alkali metal nitrates decomposes to produce …X… while lithium nitrate on heating decomposes to corresponding …Y… Here, Y and Y refer fo
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
The low melting point of alkali is due 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
Correct order of stability of group IIA metal carbonates is (OJEE 2009)
For alkali metals, which one of the following trends is incorrect? (KCET 2010)
Property of the alkaline earth metals that increase with their atomic number (AIPMT 2010)
The yellow coloured flame is of (MP PMT 2010)