Emissary = a person sent as a diplomatic representative on a special mission.

Spy = secretly collect sensitive or classified information; engage in espionage

Descry = to see or notice something or someone

Rogue = deceitful and unreliable.

Let’s first see the meanings of the given words:

Manual = a book that explains how to operate something.
e.g. The computer comes with a 600-page instruction manual.

Dictionary = a book that contains lists of words and their meaning.

Thesaurus = a book that contains lists of words and phrases with similar meanings.

Directory = a book that contains a list of names, addresses, or other facts.

Handbook = a book that contains instructions on how to use something.

e.g. The student handbook describes all the campus activities.

Let's first see the meanings of the given words:
Empathy = ability to understand and share the feelings of others.
e.g. He loves children and has a certain empathy with them.
Apathy = lack of interest, or the attitude of not caring resulting from it
e.g. There is a growing sense of apathy among teens and a feeling that there are no opportunities, he said. 

Sympathy = understanding between people.

Appreciation = valuing or respect.

Warmth = enthusiasm, affection, or kindness.

• The sequence will start with sentence P as it mentions a fact (total number of moons in our solar system) from the research conducted in 2008.
   
• The use of "these" in R is for the 193 moons mentioned in P. This makes R next in the sequence.
   
• S states a fact about the moons and Q is just a statement contrary to it (that uses “however” at the beginning). It means SQ is a pair. 

Thus, the correct sequence will be:PRSQ.

After rearranging the sentences, the passage will be: There are a total of 193 moons in our solar system as per the research conducted in the year 2008. Out of these, 185 moons orbit around the full-size planets, and 8 moons revolve around the dwarf planets. Most of the moons are airless. However, there are some that have an atmosphere.

The given sentence is of direct speech. Follow the rules given below to change it to indirect speech:

• The speech is a warning from the master to his servant; therefore, the reporting verb ‘said’ will be changed to ‘warned’ in the indirect speech.
   
• Inverted commas (‘’..’’) will be removed.
   
• Since the reporting verb is in V2 form, 
  
  The modal "will" will change to "would". The simple present tense will change to the simple past tense.
   
• The 2nd person pronoun (you) will change according to the object (i.e. the driver); ‘You’ will change to ‘he’.
   
• The 1st person pronoun “I” will change according to the subject (i.e. the master); ‘I’ will change to ‘he’. 

Thus, the sentence in indirect speech will be: The master warned the driver that he would dismiss him if he didn’t drive properly.

• The sequence will start with sentence C as it has the subject in it (Poonam, a class teacher).
   
• The use of ‘them’ in D is used for the ‘students’ mentioned in C. This makes D the next in the sequence.
   
• The use of ‘their’ (a possessive) in A is used for those 3 students that are already mentioned in D. This makes A the next in the sequence. 
• B will be last in the sequence as it tell us about the student named "Koushal" (mentioned in A) who hardly studied.

Thus, the correct sequence will be: CDAB

After rearranging the sentences, the passage will be:Poonam, the class teacher, was very much loved and respected by her students. Three of them were very intelligent and spent most of their time studying with Poonam. Their classmate, Koushal, hardly studied and spent much of his time wasting on prattles. He made himself busy by collecting old pens and used papers in order to avoid studies.

Let's first see the meanings of the given words:

Suggested = to mention an idea, possible plan, or action for other people to consider

Discontinued = to stop doing or providing something

Abolished = to end an activity or custom officially

Abandoned = to leave a place, thing, or person, usually for ever

• The sentence implies that the process of recalibration of tax slabs was proposed. 
   
• Thus, the word "suggested" fits in the blank perfectly.

The idiom "to be taken aback" means to be greatly surprised at the situation or the conduct of someone.

e.g. I was a little taken aback at the directness of the question.

Option A has the incorrectly spelt word. Its corret spelling is "dictionary" which means a book that contains a list of words in alphabetical order and that explains their meanings. 

Other words and their meanings are:

Irrelevant = not connected with or relevant to something

Perishable = likely to decay or go bad quickly

Tangible = perceptible by touch

Option C has the incorrectly spelt word. The correct spelling is "committee". It is a group of people appointed for a specific function by a larger group and typically consisting of members of that group.

Other words and their meanings are:

Commission =an instruction, command, or role given to a person or group.

Commentary = an expression of opinions or offering of explanations about an event or situation.

Competition = the activity or condition of striving to gain or win something by defeating or establishing superiority over others.