Chemistry · 2021
JEE Main · 3 August 2021, Shift 2 · Q35
Which one of the following statements is incorrect? A. The correct order of increasing first ionization enthalpy is Li < H < F. B. Out of the three…
Which one of the following statements is incorrect?
A. The correct order of increasing first ionization enthalpy is $\displaystyle \mathrm{Li}<\mathrm{H}<\mathrm{F}$.
B. Out of the three isotopes of hydrogen, two are radioactive
C. Reactivity of halogens is much more than that of hydrogen.
D. The size of $\displaystyle \mathrm{H}^{+}$ion is less than $\displaystyle 0.1$ pm .
Official answer
(2)
B only
More from Hydrogen
- The reaction of H_2 O_2 with potassium permanganate in acidic medium leads to the formation of mainly:2022
- Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Isotopes of hydrogen have almost…2023
- Given below are two statements: Statement I: Permutit process is more efficient compared to the synthetic resin method for the softening of water.…2023
- The strength of 50 volume solution of hydrogen peroxide is ____ g/L (Nearest integer). Given: Molar mass of H_2 O_2 is 34 g mol^-1 Molar volume of…2023
- Consider the following reaction: 2 HSO_4^-(aq) →[ (2) Hydrolysis ] (1) Electrolysis 2 HSO_4^-+2 H^++A The dihedral angle in product A in its solid…2022
- Addition of H_2 SO_4 to BaO_2 produces:2022
- High purity (>99.95\%) dihydrogen is obtained by2022
- In an ice crystal, each water molecule is hydrogen bonded to ____ neighbouring molecules.2023
JEE Main 2021 Chemistry question, with the answer from NTA’s final answer key. Where our answers come from.