Questions

In S.I. System unit of angular momentum is "joule.Second".

SI unit of Planck's constant is joule-seconds(j-s).

The meanings of the given words are as follows:
Tremulous: shaking or quivering slightly 

Stringent: (of regulations, requirements, or conditions) strict, precise, and exacting

Garrulous: excessively talkative, especially on trivial matters
Quivery: shaking or trembling slightly
Steady: firmly fixed, supported, or balanced; not shaking or moving
Conjunctive: relating to or forming a connection or combination of things
Desist: stop doing something; cease or abstain

Abstain: restrain oneself from doing or enjoying something
Defer: put off (an action or event) to a later time; postpone
Terse: sparing in the use of words; abrupt
Abrupt: sudden and unexpected
Therefore, it can be observed that option B i.e. ‘quivery, steady’ forms a synonym-antonym pair of ‘tremulous’.

Group 1 metals are also called as alkali metals with reactive in nature and low melting points. They are soft and produce hydrogen and alkaline metal hydroxide solution when they react with water.

Swaraj  movement  was  initiated  by Mahatma  Gandhi  which  focuses  on self-rule  or  self-governance  and  is intimately    linked    with    Ahimsa (non-violence)    and    Satyagraha (adherence  to  truth), moreover  it referred to Gandhi’s concept Indian independence   from   British   rule. The movement had two meanings, political  and  non-political.  It  was political   in   the   sense   that   it opposed being ruled by foreigners, and  non-political  in  the  sense  that every  person  has  right  to  be  ruled by  himself  or  herself.  Swaraj  is  a virtue    which    need    time    and patience  to  achieve  and  cannot  be obtained easily and quickly

Considering that citizens accused of crimes in the United States have the right to have their case heard in front of a jury of their peers, the government requires that citizens participate in jury duty. This responsibility is mandatory for individuals who are called on to serve. Failure to serve will result in legal punishments.