General Knowledge

Science & Technology

Easy

Given below are two statements, one is labelled as Assertion (A) and the other is labelled as Reason (R).

Assertion (A): Clothes are not washed properly in hard water.

Reason (R): Hard water contains many minerals.

In the light of the above statements, choose the most appropriate answer from the options given below:

Both (A) and (R) are correct and (R) is the correct explanation of (A)

Both (A) and (R) are correct but (R) is not the correct explanation of (A)

(A) is correct but (R) is not correct

(A) is not correct but (R) is correct

✅ Correct Option: 1

Hard water contains dissolved minerals such as calcium and magnesium salts - R is correct. These minerals react with soap to form insoluble scum, interfering with the cleaning action - so A is also correct, and R directly explains A.

2025: 16 May Shift 1

Stars are heavenly bodies made up of hot burning gases. Which of the following statements are TRUE?

(A) A star's color indicates the temperature of its surface.

(B) Blue color denotes the minimum temperature.

(D) Neutron stars are formed by supernova explosions.

Choose the correct answer from the options given below:

2022: 23 Aug Shift 1

The speed of light is:

2026: 20 May Shift 2

ISRO recently launched the NVS-01 mission. It is a-

2023: 11 June Shift 2

Match List - I with List - II. (Match the Respiratory Organs of Animal)

List - I (Shorts Cuts Keys)	List - II (Description)
(1) Ctrl + B	(I) Open existing document
(2) F1	(II) Left alignment
(3) Ctrl + L	(III) Bold
(4) Ctrl + O	(IV) Help

Choose the correct answer from the options given below:

2025: 23 May Shift 1

Which one of the following is NOT an example of 'Ex-Situ' biodiversity conservation efforts in India?

2023: 15 June Shift 2

When did Indian Space Research Organisation (ISRO) launch Chandrayaan-3?

Solution

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