The correct answer is option 3 i.e. kind.

In this context, "kind" is used in two different senses:

• "Kind" describes someone's nature as being friendly, generous, or considerate.
• "Kind" is used to indicate a category or type, describing the rainforest as a specific kind of forest.

The correct answer is Option 1 i.e. equal.

• As per the statement "The angles are equal", it is also implied that the sides are also equal.
• Therefore, the most appropriate option to fill in the blank is "equal".

Thus, the correct sentence is:

The angles are equal, consequently the sides are equal.

The correct answer is option 3 i.e. edition.

The meaning of the given words is:

Excretion: a process in which metabolic waste is eliminated from an organism.

Insertion: the act of putting something inside something else.

Edition: the form in which a book is published; all the books, newspapers, etc. published in the same form at the same time

Addition: adding something, especially two or more numbers

The most appropriate filler for the given blank is edition.

The correct sentence is: The first printed edition of this book came in 193c.

The correct answer is option 2 i.e. Poignant.

"Poignant" describes something that evokes a strong feeling of sadness or regret, often in a deeply moving or touching way. It conveys a sense of emotional depth and significance.

Therefore, "poignant" is the most appropriate one-word substitute for the given description.

The correct answer is option 2 i.e. posthumous publication.

The term "posthumous publication" accurately describes a book published after the author's death.

It is a single term that conveys the meaning of the given group of words.

"Posthumous" means occurring, awarded, or appearing after the death of the originator, and "publication" refers to the act of making something publicly known, especially through print.

The correct answer is option 4 i.e. Arguement.

The correct spelling of the word is Argument.

Let's have a look at the meaning of the given options-

1. Argument- a reason or the reasoning given for or against a matter under discussion.
2. Distance- a numerical measurement of how far apart objects or points are.
3. Commitment- being prepared to give a lot of your time and attention to something because you believe it is right or important.
4. Existence- the state of existing.

As the chosen option is an incorrectly spelt word it will be the correct answer.

The correct answer is option 4 i.e. Beginning.

Beginning is incorrectly spelt as beggining. It means the time when something starts. Rest of the words in the sentence are spelt correctly.

The correct answer is option 1 i.e. CDAB.

Sentence C will be the introductory sentence as it gives information about the Mehras -the new neighbours.

Sentence D will be the next as it tells about how the neighbours helped the Mehras.

Sentence A will follow sentence D as it tells about the impression that is being formed by them.

Sentence B will be the last sentence as it concludes the para.

The correct sequence is: CDAB.

The Mehras were newcomers to the neighborhood. My wife and I called on them to enquire if they needed any help. Our first impression was that both seemed a bit depressed. It was much later that they became our close friends and confided about their son’s tragic death.

The correct answer is option 1 i.e. QPRS.

• Q introduces the subject: "nanostructures on the surface made of nickel selenide."
• P adds details about the substances added (iron and phosphor).
• R explains the benefit: "high performance and stability."
• S specifies the purpose: "needed for industrial-scale electrolysis."

Therefore, the correct paragraph is:

The nanostructures on the surface made of nickel selenide, with added, or "doped," iron and phosphor, offer the high performance and stability that are needed for industrial-scale electrolysis.

The correct answer is option 1 i.e. QPSR.

Part Q acts as a complement of part 1 as it explains the situation of the eggs "They lay thousands of eggs at a time but do not look after them".

R will come after P, as R is the result of the reason explained in part P.

Now the S is the concluding part so it will come at the last of the statement "She simply leaves the eggs and never comes back to them."

Now we have the arrangement QPSR that is in option 1.

Hence, the chosen option is correct.