What is the primary difference between a `HashMap` and a `TreeMap` in the Java Collections Framework?

The NEP-2020 proposes to prepare which of the curriculum frameworks? (A) National Curriculum Framework for School Education (B) National Curriculum Framework for Adult Education (C) National Curriculum Framework for Teacher Education (D) National Curriculum Framework for Technical Education (E) National Curriculum Framework for Vocational Education Choose the correct answer from the options given below :

A

(A), (C), (E) only

B

(B), (C), (D) only

C

(A), (B), (C) only

D

(C), (D), (E) only

What is the purpose of the `Collections.reverse()` method in the Java Collections Framework?

A

It removes all elements from a list

B

It sorts a list in ascending order

C

It adds elements to a list

D

It reverses the order of elements in a list

What is the primary difference between a `List` and a `Set` in the Java Collections Framework?

A

A `Set` allows duplicate elements, while a `List` does not

B

A `List` is unmodifiable, while a `Set` is modifiable

C

A `List` allows duplicate elements, while a `Set` does not

D

A `Set` is indexed, while a `List` is not

What is the primary difference between a `HashSet` and a `LinkedHashSet` in the Java Collections Framework?

A

A `HashSet` uses a tree structure to store elements

B

A `LinkedHashSet` is synchronized, while a `HashSet` is not

C

A `LinkedHashSet` maintains insertion order, while a `HashSet` does not

D

A `HashSet` allows duplicate elements, while a `LinkedHashSet` does not

What is the primary difference between a `Queue` and a `Deque` in the Java Collections Framework?

A

A `Queue` represents a single-ended queue, while a `Deque` represents a double-ended queue

B

A `Queue` allows duplicate elements, while a `Deque` does not

C

A `Deque` is synchronized, while a `Queue` is not

D

A `Queue` is indexed, while a `Deque` is not

What is the primary difference between a `Stack` and a `Queue` in the Java Collections Framework?

A

A `Queue` allows duplicate elements, while a `Stack` does not

B

A `Stack` allows duplicate elements, while a `Queue` does not

C

A `Queue` uses a LIFO order, while a `Stack` uses a FIFO order

D

A `Stack` uses a LIFO (Last-In-First-Out) order, while a `Queue` uses a FIFO (First-In-First-Out) order

In Java, which method is used to add an element to a collection in the Java Collections Framework?

A

`insert()`

B

`put()`

C

`add()`

D

`append()`

In Java, which method is used to obtain a synchronized (thread-safe) map from an existing map in the Java Collections Framework?

A

`makeSynchronizedMap()`

B

`synchronized()`

C

`Collections.synchronizedMap()`

D

`synchronizeMap()`

According to National Curriculum Framework (NCF), 2005 which of the following statement(s) is/are correct regarding teaching History at the upper primary stage? I. At the upper primary stage, History must focus on developments in India. II. At the upper primary stage, History will take into account developments in different parts of India, with sections on events or developments in other parts of the world. III. At the upper primary stage, History will only take into account development in different parts of India.

A

Only I

B

Only III

C

Only II

D

I, II and III

In the Java Collections Framework, which interface extends the `List` interface to provide more efficient insertions and deletions in the middle of the list?

A

`Map`

B

`Set`

C

`Deque`

D

`Queue`

What is the primary difference between a `HashMap` and a `TreeMap` in the Java Collections Framework?

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