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Q:

Propyne and propene can be distinguished by

A) AgNO₃ in ammonia B) conc. H₂SO₄
C) dil. KMnO₄ D) Br₂ in CCl₄
 
Answer & Explanation Answer: A) AgNO₃ in ammonia

Explanation:

Propene, being an alkene, and propyne, being a alkyne, are distinguished using the common chemical tests namely ammoniacal silver nitrate or ammoniacal cuprous chloride. Ammoniacal silver nitrate is also called as Tollen's reagent.

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Q:

Name the Russian chemist who stated that the properties of elements are a periodic function of their atomic masses?

A) Markovnikov B) Zelinsky
C) Mendeleev D) Zaitsev
 
Answer & Explanation Answer: C) Mendeleev

Explanation:
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Q:

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select the appropriate option. If a sentence is free from error, select 'No error'.
Inspite of the doctor's stern warning (1)/ Latika continued taking (2)/ sugars in her milk. (3)/ No Error (4)

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: C) 3

Explanation:
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Q:

This tax is entirely borne by the entity it is levied upon and cannot be passed.

A) Direct tax B) Indirect tax
C) Straight tax D) Advance tax
 
Answer & Explanation Answer: A) Direct tax

Explanation:
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Q:

A manufacturer faces a -1.2 price elasticity of demand for its product. It is presently selling 7,500 units/day. If it wants to increase quantity sold by 9%, it must lower its price by

A) 7.5 percent B) 7.8 percent
C) 10.2 percent D) 10 percent
 
Answer & Explanation Answer: A) 7.5 percent

Explanation:
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Q:

AC is converted into DC by a

A) Condenser B) Rectifier
C) Amplifier D) Filter
 
Answer & Explanation Answer: B) Rectifier

Explanation:
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Q:

The Union Cabinet Chaired by Prime Minister Shri Narendra Modi has approved the establishment of National Institute of Mental Health Rehabilitation (NIMHR) at which state?

A) Gwalior B) Bhopal
C) Jammu D) New Delhi
 
Answer & Explanation Answer: B) Bhopal

Explanation:

The Union Cabinet Chaired by Prime Minister Shri Narendra Modi has approved the establishment of National Institute of Mental Health Rehabilitation (NIMHR) at Bhopal.

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Q:

According to the provisions of the Constitution of India, which one of the following is nota fundamental duty?

A) To respect the National Flag   B) To defend the country
C) To provide education to one’s child D) To promote village and cottage industries
 
Answer & Explanation Answer: D) To promote village and cottage industries

Explanation:

Article 43 also places upon the State the responsibility of promoting cottage industries, and the federal government has, in furtherance of this, established several Boards for the promotion of khadi, handlooms etc., in coordination with the state governments. It is a DPSP.

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