Alkali metals displace hydrogen from water forming bases due to the reason thatA. They are far above the hydrogen in electrochemical series based on oxidation potentialB. They are far below the hydrogen in electrochemical series based on oxidation potentialC. Their ionization potential is less than that of other elementsD. They contain only one electron in their outermost shell.

Alkali metals displace hydrogen from water forming bases due to the re

1.	Alkali metals displace hydrogen from water forming bases due to the reason thatA. They are far above the hydrogen in electrochemical series based on oxidation potentialB. They are far below the hydrogen in electrochemical series based on oxidation potentialC. Their ionization potential is less than that of other elementsD. They contain only one electron in their outermost shell.
Answer» Correct Answer - B Alkali metals are below hydrogen in the electrochemical series based on oxidation potential (in series based on reduction potential, alkali metals are above hydrogen).

Discussion

No Comment Found

Related InterviewSolutions

Among `KO_(2)`, `AlO_(2)^(-)`, `BaO_(2)` and `NO_(2)^(+)`, unpaired electrons is present inA. `NO_(2)^(+)` and `BaO_(2)`B. `KO_(2)` and `AlO_(2)^(-)`C. `KO_(2)` onlyD. `BaO_(2)` only.
A combustible gas is liberated when caustic soda solution is heated withA. SB. `NH_(4)Cl`C. `I_(2)`D. Zn.
A combustible gas is liberated when caustic soda solution is heated withA. `NH_(4)Cl`B. `I_(2)`C. ZnD. S.
When a substance a reacts with water, it produces a combustible gas B and a solution of substance C in water. When another substances D reacts with this solution of C . It also produce gas B on reaction with dilute sulphuric acid at room temperature . A imparts a deep golden yellow colour to the smokless flame of bunsen flame A,B , C and D are respectivelyA. Na, `H_(2)`, NaOH and ZnB. K, `H_(2)`, KOH and AlC. Ca, `H_(2)`, `Ca(OH)_(2)` and SnD. `CaC_(2), C_(2)H_(2)`, `Ca(OH)_(2)` and Fe.
An aqueous solution of sodium sulphate is electrolysed using inert electrodes. The products at the cathode and anode are respectivelyA. `H_(2), O_(2)`B. `O_(2), H_(2)`C. `O_(2), Na`D. `O_(2), SO_(2)`.
The metallic lustre exhibited by sodium is explained byA. Diffusion of sodium ionsB. Oscillation of loose electronsC. Excitation of free protonsD. Existence of body centred cubic lattice.
Assertion (A) The reaction LiI + KF `rarr` LiF + KI proceed in the direction indicated. Reasons (A) Fluorine, being more reactive can easily replace iodine.
Sodium peroxide which is yellow solid, when exposed to air becomes white due to the formation ofA. `H_(2)O_(2)`B. `Na_(2)O`C. `Na_(2)O + O_(3)`D. NaOH and `Na_(2)CO_(3)`
Which of the following carbonates is least soluble in water ?A. `CaCO_(3)`B. `NaHCO_(3)`C. `Na_(2)SO_(4)`D. `KHCO_(3)`.
Which one of the alkali metals forms only the normal oxide, `M_(2)O`, on heating in air ?A. KB. LiC. NaD. Rb.

Discussion

No Comment Found

Related InterviewSolutions

Reply to Comment