19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Along the group atomic and ionic radii are …X… and along the period atomic and ionic radii are …Y… Here, X and Y refer to
The most correct reason for colour of alkali metal ions is
Hydrogen carbonate of lithium doesn’t exist in solid state due to
On moving top to bottom the negative value of formation …A… for fluoride of alkali metals. Here, A refer to
Among the following element the non-radioactive elements(s) is/are
Match List-I with List-II. List-I List-II
Which of the following statements(s) is/are incorrect regarding the s-block elements? I. Francium is highly radioactive element. II. Oxides and hydroxides of alkali metals and alkaline earth metals are not alkaline i…
The structure of beryllium chloride in solid state and vapour phase, are: (NEET 2021)
Among the following alkaline earth metal halides, one which is covalent and soluble in organic solvents is: (NEET 2021)
HCl was passed through a solution of CaCl2, MgCl2 and NaCl. Which of the following compound(s) crystallise(s)? (NEET 2020)
Identify the incorrect statement from the following (NEET 2022)
Which of the following is/are correct pair(s) regarding diagonally related elements?
The following metal ion activates many enzymes, participates in the oxidation of glucose to produce ATP and with Na, is responsible for the transmission of nerve signals (NEET 2020)
Which of the following ion(s) is/are responsible for biological functions such as maintenance of ion balance and nerve impulse conduction?
[X] and [Y] are two nitrates of alkali metals [X] and [Y] on decomposition produces oxides and nitrites respectively. Here, [X] and [Y] refer to
Which of the following choice(s) represents(s) physical properties of alkali metals?
Which of the following statement is incorrect regarding use of caustic soda?
Why lithium compound are soluble in organic solvent?
Which of the following metal do not form salt with ethyne?
Choose the incorrect statement out of the following
Alkali metals are never found in free state because
Which of the following is an amphoteric hydroxide? (NEET 2019)
…X and …Y…Shown diagonal similarity. Here, X and Y refer to
Which of the following shows diagonal relationship?
Which of the following does not belong to alkaline earth metal?