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Objective Question & Answer

QUESTION

Objective Question

Q.1

Consider the following chemical emulsions.

1. Methyl alcohol

2. Cetyl alcohol

3. Stearyl alcohol

4. Kerosene

Which of the above chemical emulsion is/are used to minimize the loss of water through the process of evaporation ?

निम्नलिखित रासायनिक इमल्शन पर विचार करें। 

1. मिथाइल अल्कोहल 

2. सीटिल अल्कोहल 

3. स्टीयरिल अल्कोहल 

4. मिट्टी का तेल 

वाष्पीकरण की प्रक्रिया के माध्यम से पानी की हानि को कम करने के लिए उपरोक्त में से कौन सा रासायनिक इमल्शन का उपयोग किया जाता

है?

A

1 only
B

1 and 4
C

2 and 4
D

2 and 3
Answer ( Option D)

2 and 3

Solution

In order to reduce evaporation from the water bodies certain chemicals such as cetyl alcohol (hexadecanol) and stearyl

alcohol (octadecanol) are used. So, the correct option is (d).

जलाशयों से पानी के वाष्पीकरण को कम करने के लिए, सेटिल अल्कोहल (हेक्साडेकेनॉल) और स्टीयरिल अल्कोहल (ऑक्टाडेकेनॉल) जैसे कुछ

रसायनों का उपयोग किया जाता है। इसलिए, सही विकल्प (d) है।

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