State one property of hydrogen due to which it is used in oxyhydrogen flame.
State one property of hydrogen that made it useful in meteorological balloons.
State one property of hydrogen that makes it a good fuel.
State one property of hydrogen due to which it is no longer used in meteorological balloons.
8. Assertion (A): Hydrogen gas is one of the components in both oxyhydrogen flame and oxyacetylene flame.
Reason (R): Hydrogen is inflammable.