Explore topic-wise MCQs in Computer Science Engineering (CSE).

This section includes 477 Mcqs, each offering curated multiple-choice questions to sharpen your Computer Science Engineering (CSE) knowledge and support exam preparation. Choose a topic below to get started.

151.

,2,3],"check")

A. syntax error
B. {1:”check”,2:”check”,3:”check”}
C. “check”
D. {1:none,2:none,3:none}
Answer» C. “check”
Discussion
152.

][1])

A. [2,3,4]
B. 3
C. 2
D. an exception is thrown
Answer» C. 2
Discussion
153.

Which of the statements about dictionary values if false?

A. more than one key can have the same value
B. the values of the dictionary can be accessed as dict[key]
C. values of a dictionary must be unique
D. values of a dictionary can be a mixture of letters and numbers
Answer» D. values of a dictionary can be a mixture of letters and numbers
Discussion
154.

,9))

A. 9
B. 3
C. too many arguments for pop() method
D. 4
Answer» B. 3
Discussion
155.

If a is a dictionary with some key-value pairs, what does a.popitem() do?

A. removes an arbitrary element
B. removes all the key-value pairs
C. removes the key-value pair for the key given as an argument
D. invalid method for dictionary
Answer» B. removes all the key-value pairs
Discussion
156.

) print(a)

A. {1: 5}
B. {1: 5, 2: 3}
C. error, syntax error for pop() method
D. {1: 5, 3: 4}
Answer» C. error, syntax error for pop() method
Discussion
157.

Which of the following isn’t true about dictionary keys?

A. more than one key isn’t allowed
B. keys must be immutable
C. keys must be integers
D. when duplicate keys encountered, the last assignment wins
Answer» D. when duplicate keys encountered, the last assignment wins
Discussion
158.

,"D") print(a)

A. {1: ‘a’, 2: ‘b’, 3: ‘c’, 4: ‘d’}
B. none
C. error
D. [1,3,6,10]
Answer» B. none
Discussion
159.

,4))

A. 1
B. a
C. 4
D. invalid syntax for get method
Answer» C. 4
Discussion
160.

Which of the following is not a declaration of the dictionary?

A. {1: ‘a’, 2: ‘b’}
B. dict([[1,”a”],[2,”b”]])
C. {1,”a”,2”b”}
D. { }
Answer» D. { }
Discussion
161.

Which of these about a dictionary is false?

A. the values of a dictionary can be accessed using keys
B. the keys of a dictionary can be accessed using values
C. dictionaries aren’t ordered
D. dictionaries are mutable
Answer» C. dictionaries aren’t ordered
Discussion
162.

print(list(d.keys()))

A. [“john”, “peter”]
B. [“john”:40, “peter”:45]
C. (“john”, “peter”)
D. (“john”:40, “peter”:45)
Answer» B. [“john”:40, “peter”:45]
Discussion
163.

Suppose d = {“john”:40, “peter”:45}. To obtain the number of entries in dictionary which command do we use?

A. d.size()
B. len(d)
C. size(d)
D. d.len()
Answer» C. size(d)
Discussion
164.

Suppose d = {“john”:40, “peter”:45}, to delete the entry for “john” what command do we use?

A. d.delete(“john”:40)
B. d.delete(“john”)
C. del d[“john”]
D. del d(“john”:40)
Answer» D. del d(“john”:40)
Discussion
165.

d1 == d2

A. true
B. false
C. none
D. error
Answer» C. none
Discussion
166.

"john" in d

A. true
B. false
C. none
D. error
Answer» B. false
Discussion
167.

d1 > d2

A. true
B. false
C. error
D. none
Answer» D. none
Discussion
168.

d = {"john":40, "peter":45}

A. “john”, 40, 45, and “peter”
B. “john” and “peter”
C. 40 and 45
D. d = (40:”john”, 45:”peter”)
Answer» C. 40 and 45
Discussion
169.

Tuples can’t be made keys of a dictionary.

A. true
B. false
Answer» C.
Discussion
170.

Which of the following statements create a dictionary?

A. d = {}
B. d = {“john”:40, “peter”:45}
C. d = {40:”john”, 45:”peter”}
D. all of the mentioned
Answer» E.
Discussion
171.

What type of data is: a=[(1,1),(2,4),(3,9)]?

A. array of tuples
B. list of tuples
C. tuples of lists
D. invalid type
Answer» C. tuples of lists
Discussion
172.

,2,3

A. yes, this is an example of tuple unpacking. a=1 and b=2
B. yes, this is an example of tuple unpacking. a=(1,2) and b=3
C. no, too many values to unpack
D. yes, this is an example of tuple unpacking. a=1 and b=(2,3)
Answer» D. yes, this is an example of tuple unpacking. a=1 and b=(2,3)
Discussion
173.

What is the data type of (1)?

A. tuple
B. integer
C. list
D. both tuple and integer
Answer» C. list
Discussion
174.

>>>print len(my_tuple)

A. 1
B. 2
C. 5
D. error
Answer» E.
Discussion
175.

>>>t1 < t2

A. true
B. false
C. error
D. none
Answer» C. error
Discussion
176.

d["john"]

A. 40
B. 45
C. “john”
D. “peter”
Answer» B. 45
Discussion
177.

>>>[t[i] for i in range(0, len(t), 2)]

A. [2, 3, 9]
B. [1, 2, 4, 3, 8, 9]
C. [1, 4, 8]
D. (1, 4, 8)
Answer» D. (1, 4, 8)
Discussion
178.

>>>t[1:-1]

A. (1, 2)
B. (1, 2, 4)
C. (2, 4)
D. (2, 4, 3)
Answer» D. (2, 4, 3)
Discussion
179.

>>>t[1:3]

A. (1, 2)
B. (1, 2, 4)
C. (2, 4)
D. (2, 4, 3)
Answer» D. (2, 4, 3)
Discussion
180.

, 9], [5, 5, 5])]

A. [1, 2, 3]
B. (1, 2, 3)
C. {1, 2, 3}
D. {}
Answer» C. {1, 2, 3}
Discussion
181.

, row2)] for (row1, row2) in zip(A, B)]

A. [0, 30, 60, 120, 160, 200, 300, 350, 400]
B. [[3, 6, 9], [16, 20, 24], [35, 40, 45]]
C. no output
D. error
Answer» C. no output
Discussion
182.

-i] for i in range(len(A))]

A. [1, 5, 9]
B. [4, 5, 6]
C. [3, 5, 7]
D. [2, 5, 8]
Answer» D. [2, 5, 8]
Discussion
183.

) for col in range(3)]

A. [3, 6, 9, 16, 20, 24, 35, 40, 45]
B. error
C. [0, 30, 60, 120, 160, 200, 300, 350, 400]
Answer» B. error
Discussion
184.

for col in row] for row in A]

A. [[11, 12, 13], [14, 15, 16], [17, 18, 19]]
B. error
C. [11, 12, 13], [14, 15, 16], [17, 18, 19]
D. [11, 12, 13, 14, 15, 16, 17, 18, 19]
Answer» B. error
Discussion
185.

] for row in (0, 1, 2)]

A. [7, 8, 9]
B. [4, 5, 6]
C. [2, 5, 8]
D. [1, 4, 7]
Answer» D. [1, 4, 7]
Discussion
186.

, i)]

A. a list of prime numbers up to 50
B. a list of numbers divisible by 2, up to 50
C. a list of non prime numbers, up to 50
D. error
Answer» D. error
Discussion
187.

, x is even} (including zero)

A. [x for x in range(1, 20) if (x%2==0)]
B. [x for x in range(0, 20) if (x//2==0)]
C. [x for x in range(1, 20) if (x//2==0)]
D. [x for x in range(0, 20) if (x%2==0)]
Answer» E.
Discussion
188.

Write a list comprehension to produce the list: [1, 2, 4, 8, 16……212].

A. [(2**x) for x in range(0, 13)]
B. [(x**2) for x in range(1, 13)]
C. [(2**x) for x in range(1, 13)]
D. [(x**2) for x in range(0, 13)]
Answer» B. [(x**2) for x in range(1, 13)]
Discussion
189.

Write a list comprehension for producing a list of numbers between 1 and 1000 that are divisible by 3.

A. [x in range(1, 1000) if x%3==0]
B. [x for x in range(1000) if x%3==0]
C. [x%3 for x in range(1, 1000)]
D. [x%3=0 for x in range(1, 1000)]
Answer» C. [x%3 for x in range(1, 1000)]
Discussion
190.

)*5/9) for x in t]

A. [0]
B. 0
C. [0.00]
D. error
Answer» E.
Discussion
191.

Write a list comprehension for number and its cube for l=[1, 2, 3, 4, 5, 6, 7, 8, 9].

A. [x**3 for x in l]
B. [x^3 for x in l]
C. [x**3 in l]
D. [x^3 in l]
Answer» B. [x^3 for x in l]
Discussion
192.

=[x+y for x, y in zip(l1, l2)] l3

A. error
B. 0
C. [-20, -60, -80]
D. [0, 0, 0]
Answer» E.
Discussion
193.

for x in l]

A. [1, 1, 1, 1, 1]
B. [1, 0, 1, 0, 1]
C. [1, 0, 0, 0, 0]
D. [0, 1, 0, 1, 0]
Answer» C. [1, 0, 0, 0, 0]
Discussion
194.

Write the list comprehension to pick out only negative integers from a given list ‘l’.

A. [x<0 in l]
B. [x for x<0 in l]
C. [x in l for x<0]
D. [x for x in l if x<0]
Answer» E.
Discussion
195.

Which of the following is the same as list(map(lambda x: x**-1, [1, 2, 3]))?

A. [x**-1 for x in [(1, 2, 3)]]
B. [1/x for x in [(1, 2, 3)]]
C. [1/x for x in (1, 2, 3)]
D. error
Answer» D. error
Discussion
196.

for y in l2]

A. [4, 8, 12, 5, 10, 15, 6, 12, 18]
B. [4, 10, 18]
C. [4, 5, 6, 8, 10, 12, 12, 15, 18]
D. [18, 12, 6, 15, 10, 5, 12, 8, 4]
Answer» D. [18, 12, 6, 15, 10, 5, 12, 8, 4]
Discussion
197.

==0: i; else: i+1; for i in range(4)])

A. [0, 2, 2, 4]
B. [1, 1, 3, 3]
C. error
D. none of the mentioned
Answer» D. none of the mentioned
Discussion
198.

for i in range(3)]; print(x);

A. [0, 1, 2]
B. [1, 2, 5]
C. error, **+ is not a valid operator
D. error, ‘;’ is not allowed
Answer» B. [1, 2, 5]
Discussion
199.

,b)) print(a)

A. [2,4]
B. [ ]
C. [3,5]
D. invalid arguments for filter function
Answer» D. invalid arguments for filter function
Discussion
200.

print(points)

A. [[1, 2], [3, 1.5], [0.5, 0.5]]
B. [[3, 1.5], [1, 2], [0.5, 0.5]]
C. [[0.5, 0.5], [1, 2], [3, 1.5]]
D. [[0.5, 0.5], [3, 1.5], [1, 2]]
Answer» D. [[0.5, 0.5], [3, 1.5], [1, 2]]
Discussion