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Objective Questions

Latest NVS TGT Computer Science Exam Question (Objective Questions), MCQ in English

Subjects : Computer Science

Question Bank NVS TGT Computer Science Tier-II Exam - English
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Computer Science

Question 1Single Answer
The negation of the statement All birds can fly is?
  1. A
    Some birds cannot fly
  2. B
    No bird can fly
  3. C
    All birds cannot fly
  4. D
    Some birds can fly
Question 2Single Answer
The converse of the implication If it rains, then the ground is wet is?
  1. A
    If the ground is wet, then it rains
  2. B
    If it does not rain, then the ground is not wet
  3. C
    If the ground is wet, it does not rain
  4. D
    It rains if and only if the ground is wet
Question 3Single Answer
A statement that is always false is called?
  1. A
    Contradiction
  2. B
    Tautology
  3. C
    Contingency
  4. D
    Converse
Question 4Single Answer
A statement that is neither always true nor always false is called?
  1. A
    Tautology
  2. B
    Contradiction
  3. C
    Converse
  4. D
    Contingency
Question 5Single Answer
In propositional logic, the implication p = q is false when?
  1. A
    p is true, q is false
  2. B
    p is false, q is false
  3. C
    p is false, q is true
  4. D
    p is true, q is true
Question 6Single Answer
Inference If it rains, the ground is wet; it rains; therefore, the ground is wet uses?
  1. A
    Modus tollens
  2. B
    Modus ponens
  3. C
    Hypothetical syllogism
  4. D
    Disjunctive syllogism
Question 7Single Answer
Either it rains or it is sunny. It is not raining. Therefore, it is sunny. This uses?
  1. A
    Modus ponens
  2. B
    Modus tollens
  3. C
    Hypothetical syllogism
  4. D
    Disjunctive syllogism
Question 8Single Answer
The statement If today is Monday, then we have class is an example of?
  1. A
    Contradiction
  2. B
    Biconditional statement
  3. C
    Conditional statement
  4. D
    Tautology
Question 9Single Answer
The negation of Some students are not intelligent is?
  1. A
    No students are intelligent
  2. B
    All students are intelligent
  3. C
    Some students are intelligent
  4. D
    Some students are not intelligent
Question 10Single Answer
A biconditional statement p = q is true when?
  1. A
    p is false, q is true
  2. B
    p is true, q is false
  3. C
    p and q are both true or both false
  4. D
    Either p or q is true
Question 11Single Answer
Which of the following is a valid law in propositional logic?
  1. A
    De Morgan’s Law
  2. B
    Law of Contradiction
  3. C
    All of the above
  4. D
    Law of Identity
Question 12Single Answer
If it rains, then the ground is wet is?
  1. A
    Biconditional
  2. B
    Conditional
  3. C
    Contradiction
  4. D
    Contingency
Question 13Single Answer
Which is valid reasoning rule?
  1. A
    Hypothetical syllogism
  2. B
    Addition
  3. C
    All of the above
  4. D
    Simplification
Question 14Single Answer
From p q, infer p uses?
  1. A
    Addition
  2. B
    Conjunction
  3. C
    Simplification
  4. D
    Modus tollens
Question 15Single Answer
From p, infer p q uses?
  1. A
    Addition
  2. B
    Conjunction
  3. C
    Simplification
  4. D
    Modus ponens
Question 16Single Answer
From p = q, q = r, infer p = r is?
  1. A
    Modus ponens
  2. B
    Disjunctive syllogism
  3. C
    Modus tollens
  4. D
    Hypothetical syllogism
Question 17Single Answer
Which is a valid application of rules of inference?
  1. A
    Only simplification
  2. B
    Only addition
  3. C
    Modus ponens, Modus tollens, Hypothetical syllogism
  4. D
    None
Question 18Single Answer
The union of sets A = {1,2,3} and B = {3,4,5} is?
  1. A
    {1,2,3,4,5}
  2. B
    {3}
  3. C
    {1,2}
  4. D
    {1,2,4,5}
Question 19Single Answer
The intersection of sets A = {1,2,3} and B = {3,4,5} is?
  1. A
    {1,2}
  2. B
    {1,2,3,4,5}
  3. C
    {3}
  4. D
    {}
Question 20Single Answer
The complement of set A in universal set U = {1,2,3,4,5} where A = {2,4} is?
  1. A
    {2,4}
  2. B
    {}
  3. C
    {1,2,3,4,5}
  4. D
    {1,3,5}
Question 21Single Answer
Which of the following is a subset of A = {1,2,3}?
  1. A
    {4}
  2. B
    {1,2}
  3. C
    {5,6}
  4. D
    {7,8}
Question 22Single Answer
A relation that is reflexive, symmetric, and transitive is called?
  1. A
    Partial
  2. B
    One-one
  3. C
    Function
  4. D
    Equivalence
Question 23Single Answer
If f : A = B is one-to-one (injective), then?
  1. A
    None
  2. B
    Multiple elements of A can map to the same element of B
  3. C
    Every element of B is mapped
  4. D
    Different elements of A map to different elements of B
Question 24Single Answer
A function f : A = B is onto (surjective) if?
  1. A
    Every element of A maps to a unique element of B
  2. B
    Every element of B is mapped by at least one element of A
  3. C
    No element of B is mapped
  4. D
    None
Question 25Single Answer
A function that is both one-to-one and onto is called?
  1. A
    None
  2. B
    Injective
  3. C
    Surjective
  4. D
    Bijective
Question 26Single Answer
If A = {1,2,3} and B = {a,b}, the number of functions from A to B is?
  1. A
    2
  2. B
    3
  3. C
    8
  4. D
    6
Question 27Single Answer
If a function f : A = B is defined as f(x) = x^2, it is?
  1. A
    One-to-one for all integers
  2. B
    Not one-to-one for all integers
  3. C
    Onto for positive integers
  4. D
    Both a and c
Question 28Single Answer
Composition of functions f : A = B and g : B = C is?
  1. A
    None
  2. B
    f(g(x))
  3. C
    f(x) + g(x)
  4. D
    g(f(x))
Question 29Single Answer
Inverse of a bijective function f : A = B is?
  1. A
    f-1 : A = A
  2. B
    f-1 : A = B
  3. C
    f-1 : B = B
  4. D
    f-1 : B = A
Question 30Single Answer
Number of subsets of a set with n elements is?
  1. A
    n
  2. B
    n!
  3. C
    n2
  4. D
    2n
Question 31Single Answer
Which of the following represents the smallest unit of data in a computer?
  1. A
    Bit
  2. B
    Byte
  3. C
    Nibble
  4. D
    Word
Question 32Single Answer
Which device is used to convert digital signals into analog for transmission?
  1. A
    Repeater
  2. B
    Router
  3. C
    Switch
  4. D
    Modem
Question 33Single Answer
Which of the following is an example of an input device?
  1. A
    Keyboard
  2. B
    Printer
  3. C
    Monitor
  4. D
    Plotter
Question 34Single Answer
Which of the following is not a primary storage device?
  1. A
    Hard disk
  2. B
    RAM
  3. C
    Cache
  4. D
    ROM
Question 35Single Answer
The unit of storage representing 1024 bytes is called?
  1. A
    Kilobyte
  2. B
    Megabyte
  3. C
    Gigabyte
  4. D
    Terabyte
Question 36Single Answer
Which of the following stores frequently accessed data to speed up processing?
  1. A
    Cache memory
  2. B
    ROM
  3. C
    Hard disk
  4. D
    Flash memory
Question 37Single Answer
What does CPU stand for?
  1. A
    Central Processing Unit
  2. B
    Central Process Unit
  3. C
    Central Processor Utility
  4. D
    Central Programming Unit
Question 38Single Answer
Which of the following performs arithmetic and logical operations in a CPU?
  1. A
    ALU
  2. B
    Control Unit
  3. C
    Register
  4. D
    Decoder
Question 39Single Answer
Which memory is non-volatile and used to store firmware?
  1. A
    ROM
  2. B
    RAM
  3. C
    Cache
  4. D
    Register
Question 40Single Answer
Secondary storage is also called?
  1. A
    Temporary memory
  2. B
    Volatile memory
  3. C
    Permanent memory
  4. D
    Main memory
Question 41Single Answer
Which of the following is a system software?
  1. A
    Word Processor
  2. B
    Spreadsheet
  3. C
    Compiler
  4. D
    Web Browser
Question 42Single Answer
Which software acts as an interface between hardware and user?
  1. A
    Application software
  2. B
    Utility program
  3. C
    Operating system
  4. D
    Device driver
Question 43Single Answer
Which software converts source code into object code in one go?
  1. A
    Compiler
  2. B
    Interpreter
  3. C
    Assembler
  4. D
    Loader
Question 44Single Answer
Which of the following is an example of application software?
  1. A
    UNIX
  2. B
    BIOS
  3. C
    Device Driver
  4. D
    MS Word
Question 45Single Answer
What is the function of an operating system?
  1. A
    Manage hardware
  2. B
    Manage software
  3. C
    Provide user interface
  4. D
    All of the above
Question 46Single Answer
Which OS interface uses typed commands?
  1. A
    GUI
  2. B
    Menu-driven
  3. C
    CLI
  4. D
    Voice interface
Question 47Single Answer
The AND gate output is 1 when?
  1. A
    Any input is 1
  2. B
    All inputs are 1
  3. C
    All inputs are 0
  4. D
    Any input is 0
Question 48Single Answer
The OR gate output is 1 when?
  1. A
    All inputs are 1
  2. B
    Any input is 1
  3. C
    All inputs are 0
  4. D
    Any input is 0
Question 49Single Answer
The NOT gate is also called?
  1. A
    Inverter
  2. B
    Buffer
  3. C
    Amplifier
  4. D
    Decoder
Question 50Single Answer
Which logic gate produces output 1 only when all inputs are 0?
  1. A
    NOR
  2. B
    NAND
  3. C
    XOR
  4. D
    AND
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