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1
NDA 2018 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
How is carbon black obtained?
A
By heating wood at high temperature in absence of air
B
By heating coal at high temperature in absence of air
C
By burning hydrocarbons in a limited supply of air
D
By heating coal at high temperature in presence of air
2
NDA 2018 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following properties is not true for graphite?
A
Hybridisation of each carbon atom is sp3
B
Hybridisation of each carbon atom is sp2
C
Electrons are delocalised over the whole sheet of atoms
D
Each layer is composed of hexagonal rings
3
NDA 2018 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following is the purest form of carbon?
A
Charcoal
B
Coke
C
Fullerene
D
Carbon black
4
NDA 2018 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
The poisonous nature of carbon monoxide (CO) is due to its
A
insolubility in water
B
ability to form a complex with haemoglobin
C
ability to reduce some metal oxides
D
property of having one $$\sigma$$-bond
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Questions Asked from Marks 2.5
NDA Subjects
Mathematics
Algebra
Sets, Relations and FunctionsLogarithmsQuadratic Equations and InequalitiesSequence And SeriesBinomial TheoremMatricesDeterminantsPermutations and CombinationsProbabilityComplex NumbersVector AlgebraThree Dimensional GeometryStatistics
Trigonometry
Trigonometric Angles and EquationsInverse Trigonometric FunctionHeight and DistanceProperties of Triangles
Coordinate Geometry
Coordinate System and Straight LineCircleParabolaEllipseHyperbolaConic Section
Calculus
FunctionsLimit, Continuity and DifferentiabilityDifferentiationApplication of DerivativesIndefinite IntegrationDefinite IntegrationArea Under The CurvesDifferential Equations
English
General Science
General Studies