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Question for JK SET Computer Science - Quiz / Questions / MCQ in English

Last Update on : October 11, 2026

Duration: 120 · Questions: 100 · Max Marks: 200

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To boost your performance in JK SET Computer Science exam, practice each question regularly and with focus. Every question tests your subject understanding, so solve them one at a time. Taking a quiz improves your speed and accuracy. Practicing topic-wise MCQs. Students benefit greatly from reviewing questions with answer keys, which help clarify concepts and strengthen Questions knowledge for success in JK SET Computer Science exams.

Latest JK SET Computer Science Exam Question (Objective Questions), MCQ in English

Subjects : Computer Science

Question Bank JK SET Computer Science (Paper 2) Exam - English

Computer Science

Q 1 :
The postfix expression AB + CD − can be evaluated using a
  1. A.stack
  2. B.tree
  3. C.queue
  4. D.linked list
Q 2 :
The post order traversal of a binary tree is DEBFCA. Find out the pre-order traversal .
  1. A.ABFCDE
  2. B.ADBFEC
  3. C.ABDECF
  4. D.None of the above
Q 3 :
The branch logic that provides making capabilities in the control unit is known as
  1. A.Controlled transfer
  2. B.Conditional transfer
  3. C.Unconditional transfer
  4. D.None of the above
Q 4 :
The number of colour required to properly colour the vertices of every planer graph is
  1. A.2
  2. B.3
  3. C.4
  4. D.5
Q 5 :
In multiuser database if two users wish update the same record at the same time, they are prevented from doing so by
  1. A.Jamming
  2. B.Password
  3. C.Documentation
  4. D.Record lock
Q 6 :
A binary search tree is a binary tree :
  1. A.All items in the left subtree are less than root
  2. B.All items in the right subtree greater than or equal to the root
  3. C.Each subtree is itself a binary search tree
  4. D.All of the above
Q 7 :
What deletes the entire file except the file structure ?
  1. A.ERASE
  2. B.DELETE
  3. C.ZAP
  4. D.PACK
Q 8 :
Which command is the fastest among the following ?
  1. A.COPY TO < NEW FILE >
  2. B.COPY STRUCTURE TO < NEW FILE >
  3. C.COPY FILE < FILE 1> < FILE 2 >
  4. D.COPY TO MFILE-DAT DELIMITED
Q 9 :
B+ tree are preferred to binary tree in Database because ?
  1. A.Disk capacity are greater than memory
  2. B.Disk access is much slower than memory access
  3. C.Disk data transfer rates are much less than memory data transfer rate
  4. D.Disks are more reliable than memory
Q 10 :
A Transaction Manager is which of the following ?
  1. A.maintains a log of transactions
  2. B.Maintains before and after database images
  3. C.maintains appropriate concurrency control
  4. D.All of the above
Q 11 :
Truth value of a proposition p ∧ ¬p is?
  1. A.True
  2. B.Cannot be determined
  3. C.Sometimes True
  4. D.False
Q 12 :
Negation of “All humans are mortal” is?
  1. A.Some humans are not mortal
  2. B.All humans are not mortal
  3. C.No human is mortal
  4. D.Some humans are mortal
Q 13 :
Which is a tautology?
  1. A.p ∧ ¬p
  2. B.p ∧ p
  3. C.p ∨ ¬p
  4. D.p → ¬p
Q 14 :
Contrapositive of p → q is?
  1. A.q → p
  2. B.¬p → ¬q
  3. C.¬q → ¬p
  4. D.p → ¬q
Q 15 :
A valid inference rule is?
  1. A.Fallacy
  2. B.Contradiction
  3. C.Paradox
  4. D.Modus Ponens
Q 16 :
De Morgan’s law is?
  1. A.¬(p ∧ q) = ¬p ∧ ¬q
  2. B.¬(p ∨ q) = ¬p ∨ ¬q
  3. C.p ∧ q = p ∨ q
  4. D.¬(p ∧ q) = ¬p ∨ ¬q
Q 17 :
Disjunctive Normal Form (DNF) is?
  1. A.Sum of products
  2. B.Product of sums
  3. C.Only AND form
  4. D.Only OR form
Q 18 :
Conjunctive Normal Form (CNF) is?
  1. A.Sum of products
  2. B.Only NOT form
  3. C.Only OR form
  4. D.Product of sums
Q 19 :
A predicate becomes a proposition when?
  1. A.It has variables
  2. B.It has quantifiers
  3. C.All variables are assigned values
  4. D.It is negated
Q 20 :
Universal quantifier symbol is?
  1. A.∃
  2. B.∈
  3. C.∀
  4. D.⊂
Q 21 :
Existential quantifier means?
  1. A.For all
  2. B.None exists
  3. C.There exists
  4. D.Exactly one
Q 22 :
Set A ∪ A equals?
  1. A.Ø
  2. B.A
  3. C.Universal set
  4. D.A'
Q 23 :
Set A ∩ A equals?
  1. A.Ø
  2. B.A'
  3. C.Universal set
  4. D.A
Q 24 :
A relation that is reflexive, symmetric, transitive is?
  1. A.Partial order
  2. B.Function
  3. C.Equivalence relation
  4. D.Injection
Q 25 :
A partially ordered set must be?
  1. A.Reflexive, symmetric, transitive
  2. B.Symmetric only
  3. C.Reflexive, antisymmetric, transitive
  4. D.Transitive only
Q 26 :
Number of subsets of a set with n elements is?
  1. A.n²
  2. B.2n
  3. C.n!
  4. D.2^n
Q 27 :
Pigeonhole principle is used for?
  1. A.Sorting
  2. B.Searching
  3. C.Counting distribution
  4. D.Encryption
Q 28 :
Permutation formula is?
  1. A.nCr
  2. B.r!
  3. C.n!
  4. D.n!/(n−r)!
Q 29 :
Combination formula is?
  1. A.n!/(n−r)!
  2. B.n!/(r!(n−r)!)
  3. C.n!
  4. D.r!
Q 30 :
Probability of sure event is?
  1. A.0
  2. B.1
  3. C.-1
  4. D.1/2
Q 31 :
Bayes theorem is used for?
  1. A.Sorting data
  2. B.Updating probability
  3. C.Graph traversal
  4. D.Matrix inversion
Q 32 :
A group must have?
  1. A.Only closure
  2. B.Closure, identity, inverse
  3. C.Only identity
  4. D.Only inverse
Q 33 :
A subgroup is?
  1. A.Subset of group that is itself a group
  2. B.Not a group
  3. C.Random subset
  4. D.Empty set
Q 34 :
A semigroup has?
  1. A.Identity only
  2. B.Inverse only
  3. C.Associative operation
  4. D.Commutativity only
Q 35 :
Isomorphism preserves?
  1. A.Structure
  2. B.Size only
  3. C.Elements only
  4. D.Order only
Q 36 :
Homomorphism preserves?
  1. A.Only elements
  2. B.Operation structure
  3. C.Only identity
  4. D.Only inverse
Q 37 :
A ring has?
  1. A.One operation
  2. B.Three operations
  3. C.Two operations
  4. D.No operation
Q 38 :
A field is?
  1. A.Only additive group
  2. B.Semigroup
  3. C.Commutative division ring
  4. D.Monoid
Q 39 :
Graph with no loops and no multiple edges is?
  1. A.Multigraph
  2. B.Directed graph
  3. C.Simple graph
  4. D.Weighted graph
Q 40 :
Eulerian circuit exists if graph is?
  1. A.All vertices odd degree
  2. B.Disconnected
  3. C.All vertices even degree
  4. D.Tree
Q 41 :
Hamiltonian path visits?
  1. A.Edges only once
  2. B.Vertices exactly once
  3. C.Edges twice
  4. D.No vertices
Q 42 :
Shortest path algorithm is?
  1. A.DFS
  2. B.BFS
  3. C.Dijkstra
  4. D.Prim
Q 43 :
A tree is?
  1. A.Cyclic graph
  2. B.Disconnected graph
  3. C.Connected acyclic graph
  4. D.Weighted graph
Q 44 :
Number of edges in tree with n nodes is?
  1. A.n
  2. B.n−1
  3. C.n+1
  4. D.2n
Q 45 :
Bipartite graph has?
  1. A.Two disjoint sets
  2. B.One set
  3. C.Three sets
  4. D.No vertices
Q 46 :
Graph coloring is used for?
  1. A.Encryption
  2. B.Scheduling
  3. C.Sorting
  4. D.Searching
Q 47 :
Boolean algebra uses values?
  1. A.0 and 2
  2. B.-1 and 1
  3. C.0 and 1
  4. D.Any integer
Q 48 :
Boolean identity: A + 0 = ?
  1. A.A
  2. B.0
  3. C.1
  4. D.A'
Q 49 :
Boolean identity: A · 1 = ?
  1. A.A
  2. B.0
  3. C.1
  4. D.A'
Q 50 :
Distributive law is?
  1. A.A + (B·C) = (A+B)(A+C)
  2. B.Both a and b
  3. C.A·(B+C) = A·B + A·C
  4. D.None

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