General Engineering Test 1 Nddc Scholarship

Correct answr:  B. 2.292 kJ

\[ \begin{aligned}
\text{Moles of HCl} &= 0.1 \times \dfrac{500}{1000} = 0.05\ \text{mol} \\
\text{Moles of NaOH} &= 0.2 \times \dfrac{200}{1000} = 0.04\ \text{mol} \\
\text{Limiting reagent} &= \text{NaOH (0.04 mol)} \\
\text{Enthalpy of neutralization} &= 57.3\ \text{kJ/mol} \\
\text{Heat evolved} &= 0.04 \times 57.3 = \boxed{2.292\ \text{kJ}}
\end{aligned}\]

Correct option: C. There is no free electron present in the crystal of diamond to conduct electricity

Diamond is an allotrope of carbon where each carbon atom is covalently bonded to four other carbon atoms in a tetrahedral structure, forming a strong 3D network. All electrons are involved in bonding, so no free (delocalized) electrons are available to conduct electricity.

Thus, it is a poor conductor of electricity despite its hardness.

Correct option: A. allotropy

Allotropy is the existence of an element in two or more different forms in the same physical state, with different atomic arrangements or structures. Examples include:

• Carbon: diamond, graphite, graphene

• Oxygen: O₂ and O₃ (ozone)

These forms are called allotropes.

Correct answer: D. 500 nm

Correct option: D. WRENCH

Just as a PAINTER uses a BRUSH to do their job, a PLUMBER uses a WRENCH as a key tool in their work. The relationship is based on the profession-to-tool pattern.

Correct option: C. parochial

"Parochial" means narrow-minded or limited in scope, especially in terms of views or interests. The sentence emphasizes that a businessman should expand his outlook in the modern age of global communications, so the opposite—a limited or narrow mindset—is being criticized.

Thus, "a parochial attitude will get you nowhere" fits perfectly.

Correct option: A. take up a difficult task

The idiom "to put one's hand to the plough" means to start a hard or serious task with determination, especially one that requires sustained effort.

Correct option: D. eclectic

"Eclectic" means deriving ideas, styles, or tastes from a broad and diverse range of sources. Since the sentence talks about books on wide-ranging subjects and many languages, eclectic best describes the family's varied tastes.

Correct option: C. ubiquitous

"Ubiquitous" means present everywhere or found all over the place. Since the sentence says plastic bags are found wherever you travel, ubiquitous is the most fitting word.

Correct option: D. buttress – inadequate

The sentence implies that Dr. Stuart's thesis lacks sufficient support, so he needs to strengthen his argument with more data.

• "Buttress" means to support or strengthen, especially in an argument.
• "Inadequate" fits the second blank because the thesis is currently not sufficient.

Thus, the correct pairing is:
"Dr. Stuart needs to buttress his argument with more experimental data; as it stands his thesis is inadequate."