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NTS MCQs

National Testing Service — Complete MCQ Bank

1,949 Questions
Exam Preparation Guide

How to prepare for NTS

NTS tests evaluate aptitude, analytical reasoning, quantitative ability, English and subject knowledge for admissions, scholarships and recruitment.

EnglishQuantitative SkillsAnalytical ReasoningSubject Knowledge
Practice under a timer and review weak areas after every test to improve both speed and accuracy.
NTS preparation illustration
21
Chemistry Medium Uploaded: 04 Sep 2026

What is the trend in atomic radius across a period from left to right?

  • ARemains constant
  • BIncreases
  • CDecreases
  • DIncreases then decreases
22
Chemistry Medium Uploaded: 04 Sep 2026

Which biomolecule is the primary source of stored energy in the human body?

  • ACarbohydrates
  • BVitamins
  • CProteins
  • DFats (lipids)
23
Chemistry Medium Uploaded: 04 Sep 2026

Which layer of the atmosphere contains the ozone layer that protects Earth from UV radiation?

  • AStratosphere
  • BThermosphere
  • CTroposphere
  • DMesosphere
24
Chemistry Hard Uploaded: 04 Sep 2026

What is the process of breaking down large hydrocarbon molecules into smaller ones called?

  • ADistillation
  • BReforming
  • CCracking
  • DPolymerization
25
Chemistry Medium Uploaded: 04 Sep 2026

What type of reaction converts an alkene into an alkane?

  • AHydrogenation (addition)
  • BElimination
  • COxidation
  • DSubstitution
26
Chemistry Medium Uploaded: 04 Sep 2026

Which process occurs at the anode during electrolysis?

  • AReduction
  • BOxidation
  • CNeutralization
  • DPrecipitation
27
Chemistry Medium Uploaded: 04 Sep 2026

At chemical equilibrium, the rate of forward reaction is:

  • ALess than reverse reaction
  • BEqual to rate of reverse reaction
  • CGreater than reverse reaction
  • DZero
28
Chemistry Medium Uploaded: 04 Sep 2026

What does the term 'activation energy' refer to?

  • AEnergy of products only
  • BMinimum energy needed to start a reaction
  • CEnergy of reactants only
  • DTotal energy released in reaction
29
Chemistry Hard Uploaded: 04 Sep 2026

What is Hess's Law used for?

  • ADetermining equilibrium constant
  • BFinding molecular geometry
  • CMeasuring reaction rate
  • DCalculating enthalpy of reactions indirectly
30
Chemistry Easy Uploaded: 04 Sep 2026

What is the strongest type of acid based on ionization?

  • AAmphoteric acid
  • BDiprotic acid
  • CStrong acid
  • DWeak acid