Question Text
Question 6 :
Assertion (A): Hydrogen shows resemblance with alkali metals as well as halogens.<br/>Reason (R): Hydrogen exists in atomic form only at high temperature.<br/>
Question 10 :
Which of the following statements concerning protium, deuterium and tritium is not true?
Question 23 :
Which of the following statement is/are true for $_{1}H^{1},\:_{1}H^{2} $ and $_{1}H^{3}$ respectively?
Question 25 :
A metal which does not react with cold water but reacts with steam to liberate $H_{2}$ gas is :
Question 27 :
The isotope of hydrogen, $D_2$ forms heavy water, $D_2O$. It is qualified as $D_2O$ because it is :<br>
Question 31 :
Which of the following statements concerning protium, deuterium and tritium is not true?<br/>
Question 33 :
Approximately what percent of the universe is believed to consist of hydrogen?
Question 36 :
Hydrogen accepts an electron to form inert gas configuration. In this it resembles
Question 39 :
In which of the properties listed below, hydrogen does not show similarity with halogens?<br>I. Nature of the oxide<br>II. Electropositive character<br>III. Combination with alkali metals<br>IV. Atomicity
Question 40 :
Assertion: Diprotium shows relatively inert behaviour at room temperature.
Reason: The values of melting point and boiling point for dideuterium are higher as compared to diprotium.