JavaScript MCQ Questions with answers and solutions Page 48

Q. Which operator will return false if two value are equal?

(A) !
(B) !=
(C) !==
(D) All of the above

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✅ Correct Answer: (B) !=

Published by Ram Sharma ⭐ 193.88K Points at 13-Jul-2022 12:24 am in JavaScript

Q. When using comparative operators,if after object to primitive conversion, at least one operand is not a string, both operands are converted to?

(A) Object
(B) Number
(C) Boolean
(D) String

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✅ Correct Answer: (B) Number

Published by Ram Sharma ⭐ 193.88K Points at 13-Jul-2022 12:25 am in JavaScript

Q. If the operator value is null, then the unary operator returns the typeof _________.

(A) string
(B) boolean
(C) object
(D) undefined

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✅ Correct Answer: (C) object

Published by Ram Sharma ⭐ 193.88K Points at 13-Jul-2022 12:25 am in JavaScript

Q. which operator evaluates its operands, then discards the value and returns undefined?

(A) Void
(B) Eval
(C) Comparison
(D) In

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✅ Correct Answer: (A) Void

Published by Ram Sharma ⭐ 193.88K Points at 13-Jul-2022 12:26 am in JavaScript

Q. If var A={B:3, C:5}, how to use the delete operator to delete one of the properties of an object.

(A) delete
(B) delete A
(C) delete A.B
(D) delete A[0]

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✅ Correct Answer: (C) delete A.B

Published by Ram Sharma ⭐ 193.88K Points at 13-Jul-2022 12:27 am in JavaScript

Q. What will be the output if we compare "ten" and 10 with less then comparison operator("ten"<10)?

(A) True
(B) False
(C) undefined
(D) error

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✅ Correct Answer: (B) False

Published by Ram Sharma ⭐ 193.88K Points at 13-Jul-2022 12:27 am in JavaScript

Q. State whether the following statements are True or False for strict equality operator(= = =).
i) If the two values have different types they are equal.
ii) If both values are null or both values are undefined, they are equal.

(A) False True
(B) True False
(C) False False
(D) True True

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✅ Correct Answer: (A) False True

Published by Ram Sharma ⭐ 193.88K Points at 13-Jul-2022 12:28 am in JavaScript

Q. which operator outputs the remainder of an integer division?

(A) Increment
(B) Modulus
(C) Subtraction
(D) Add

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✅ Correct Answer: (B) Modulus

Published by Ram Sharma ⭐ 193.88K Points at 13-Jul-2022 12:28 am in JavaScript

Q. Which operator checks if the value of the left operand is greater than the value of the right operand?

(A) Greater than or Equal to
(B) Less than
(C) Greater than
(D) Equal

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✅ Correct Answer: (C) Greater than

Published by Ram Sharma ⭐ 193.88K Points at 13-Jul-2022 12:29 am in JavaScript

Q. Which of the following statement is true about BitWise OR?

(A) It is a unary operator and operates by reversing all the bits in the operand.
(B) It performs a Boolean AND operation on each bit of its integer arguments
(C) Both A and B
(D) It performs a Boolean OR operation on each bit of its integer arguments.

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✅ Correct Answer: (D) It performs a Boolean OR operation on each bit of its integer arguments.

Published by Ram Sharma ⭐ 193.88K Points at 13-Jul-2022 12:29 am in JavaScript

JavaScript MCQs with answers Page - 48

Q. Which operator will return false if two value are equal?

Q. When using comparative operators,if after object to primitive conversion, at least one operand is not a string, both operands are converted to?

Q. If the operator value is null, then the unary operator returns the typeof _________.

Q. which operator evaluates its operands, then discards the value and returns undefined?

Q. If var A={B:3, C:5}, how to use the delete operator to delete one of the properties of an object.

Q. What will be the output if we compare "ten" and 10 with less then comparison operator("ten"<10)?

Q. State whether the following statements are True or False for strict equality operator(= = =).
i) If the two values have different types they are equal.
ii) If both values are null or both values are undefined, they are equal.

Q. which operator outputs the remainder of an integer division?

Q. Which operator checks if the value of the left operand is greater than the value of the right operand?

Q. Which of the following statement is true about BitWise OR?

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JavaScript MCQs with answers Page - 48

Q. Which operator will return false if two value are equal?

Q. When using comparative operators,if after object to primitive conversion, at least one operand is not a string, both operands are converted to?

Q. If the operator value is null, then the unary operator returns the typeof _________.

Q. which operator evaluates its operands, then discards the value and returns undefined?

Q. If var A={B:3, C:5}, how to use the delete operator to delete one of the properties of an object.

Q. What will be the output if we compare "ten" and 10 with less then comparison operator("ten"<10)?

Q. State whether the following statements are True or False for strict equality operator(= = =). i) If the two values have different types they are equal. ii) If both values are null or both values are undefined, they are equal.

Q. which operator outputs the remainder of an integer division?

Q. Which operator checks if the value of the left operand is greater than the value of the right operand?

Q. Which of the following statement is true about BitWise OR?

Programming Categories

📱 Download Our App

Q. State whether the following statements are True or False for strict equality operator(= = =).
i) If the two values have different types they are equal.
ii) If both values are null or both values are undefined, they are equal.