Questions

Q:

Atomic number of which of the following elements is greater than that of Fluorine?

A) Sodium B) Beryllium
C) Nitrogen D) Boron
 
Answer & Explanation Answer: A) Sodium

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Q:

Which of the following elements has the lowest melting point?

A) Titanium B) Tungsten
C) Argon D) Nickel
 
Answer & Explanation Answer: C) Argon

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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:

Oxide of which of the following will turn red litmus blue?

A) Magnesium B) Phosphorus
C) Sulphur D) Carbon
 
Answer & Explanation Answer: A) Magnesium

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Q:

In the following passage some of the words have been left out. Read the passage carefully and select the correct answer for the given blank out of the four alternatives.


The "Global Nutrition Report 2016" once again ____________ India's slow overall progress ____________ addressing chronic malnutrition, manifest in stunting (low weight for age), wasting (low weight for height), micronutrient __________ and over­weight. Our track _________ in reducing the proportion of undernourished children over the past decade has been modest at best, and _____________ what other countries with comparable socio­economic indicators have achieved.


Our track _________ in reducing the proportion of undernourished children

A) progress B) record
C) report D) result
 
Answer & Explanation Answer: B) record

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Q:

Read the following passage carefully and choose the most appropriate answer to the question out of the four alternatives.

 

The man who is perpetually hesitating which of the two things he will do first, will do neither. The man who resolves, but suffers his resolution to be changed by the first counter-suggestion of a friend, - who fluctuates from opinion to opinion, from plan to plan, and veers like a weather-cock to every point of the compass, with every breath of caprice that blows-can never accomplish anything great or useful. Instead of being progressive in any thing, he will be at best stationary, and more probably retrograde in all. It is only the man who first consults wisely, then resolves firmly, and then executes his purpose with flexible perseverance, undismayed by those petty difficulties which daunt a weaker spirit that can advance to eminence in any line. Take your course wisely, but firmly; and having taken it, hold upon it with heroic resolution, and the Alps and Pyrenees will sink before you.

 

The writer advises us to be ______.

A) wise, firm and resolute. B) weak, firm and resolute.
C) happy, firm and resolute. D) flexible, happy and resolute.
 
Answer & Explanation Answer: A) wise, firm and resolute.

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Q:

The method of soil conservation in which different crops are grown in alternate rows and are sown at different times to protect the soil from rain wash is called?

A) Mulching B) Intercropping
C) Rock dam D) Terrace farming
 
Answer & Explanation Answer: B) Intercropping

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Q:

Which of the following metals is stored in kerosene oil?

A) Copper B) Sodium
C) Platinum D) Gold
 
Answer & Explanation Answer: B) Sodium

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