# NUST NET SAMPLE CHEMISTRY QUESTIONS

National University of Sciences and Technology NUST very well-known and top rated engineering university of Pakistan. NUST was founded in 1991 with mission of providing quality education and invest in research. So far in a very short period of time they are able to earn very good name in world. NUST provides wide range of programs to accommodate students from every field which also includes engineering programs offered to DAE candidates. Due to their high standards their fee structure is also high, but for poor people they have scholarship facilities (Need based Scholarship). Minimum 60% marks are required to become eligible for NUST NET test. Every year thousands of students apply for NUST NET, all candidates should work very hard to get admission in NUST.

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Topic:

Reaction Kinetics

Question:

For homogeneous catalysis reaction between liquids, the catalyst should be of which form?

Options:

• Solid
• Liquid
• Gas
• Can be any of the above

Liquid

Explanation:

In chemistry, homogeneous catalysis is a sequence of reactions that involve a catalyst in the same phase as the reactants. Phase here refers to solid, liquid, vs gas. Most commonly, a homogeneous catalyst is co-dissolved in a solvent with the reactants.

Topic:

Solutions

Question:

If we have 450g of a NaCL solution that is 35 NaCL w/w %. What is the mass of NaCL?

Options:

• 128.5 g
• 129.5 g
• 157.5 g
• 131.5 g

157.5 g

Explanation:

% by weight = (Mass of solute/Mass of solution) * 100

35 = (X/450) *100

X = 35 * 450/100 = 157.5 g

Topic:

Basics of Chemistry

Question:

Non-stoichiometric compounds are formed by:

Options:

• Only alkali metals
• Only transition elements
• Only noble gases
• None of the above

Correct Option:

Only transition elements

Explanation:

Binary transition metal compounds, such as the oxides and sulfides, are usually written with idealized stoichiometry’s, such as FeO or FeS but these compounds are usually cation deficient and mostly never contain a 1:1 cation:anion ratio. Thus a substance such as ferrous oxide is actually a nonstoichiometric compound with a range of compositions.

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