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M3-R5.1 — Dictionaries MCQ
21 Questions • M3-R5.1
20:00
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1
A dictionary in Python stores?
A
Lists of numbers
B
Key-value pairs
C
Only strings
D
Ordered sequences
2
Dictionary is created using?
A
[]
B
()
C
{}
D
<>
3
To access value for key "name" in dict d?
A
d.name
B
d["name"]
C
d.get("name")
D
Both b and c
4
dict.keys() returns?
A
All values
B
All keys
C
Key-value pairs
D
Length of dict
5
dict.values() returns?
A
All keys
B
All values
C
Only first value
D
Dict length
6
dict.items() returns?
A
Only keys
B
Only values
C
All key-value pairs
D
Dict size
7
To delete a key from a dict?
A
dict.remove(key)
B
del dict[key]
C
dict.delete(key)
D
dict.pop(key) or del dict[key]
8
Dictionary keys must be?
A
Strings only
B
Numbers only
C
Hashable (immutable) types
D
Lists
9
len({"a":1,"b":2}) returns?
A
1
B
4
C
2
D
3
10
To check if key "x" exists in dict d?
A
d.has("x")
B
"x" in d
C
d.contains("x")
D
d.find("x")
11
Dictionary is created with?
A
[]
B
()
C
{}
D
<>
12
Dictionary stores data as?
A
Index-value
B
Key-value pairs
C
Sorted list
D
Random values
13
dict.get(key) returns?
A
Error if key missing
B
Value for key, None if missing
C
Key name
D
Boolean
14
dict.update(dict2) does?
A
Replaces dict with dict2
B
Merges dict2 into dict
C
Deletes dict
D
Creates new dict
15
del dict[key] does?
A
Deletes entire dict
B
Removes specific key-value pair
C
Removes all values
D
Renames key
16
dict.pop(key) does?
A
Returns dict
B
Removes key and returns its value
C
Adds key
D
Sorts dict
17
Can dictionary have duplicate keys?
A
Yes
B
No — last value overwrites
C
Only with different types
D
Sometimes
18
len({"a":1, "b":2, "c":3}) returns?
A
2
B
3
C
6
D
9
19
"key" in dict checks?
A
If value exists
B
If key exists in dictionary
C
Dictionary length
D
Dictionary type
20
dict.clear() does?
A
Deletes dict
B
Removes all items, dict becomes empty
C
Sorts dict
D
Copies dict
21
Dictionary comprehension syntax?
A
{key:val for item in iterable}
B
[key:val for item]
C
(key:val)
D
dict(key,val)
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Total Questions:
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Subject:
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