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Q:

Infection of salivary glands by a virus leads to 

A) tetanus B) mumps
C) pyorrhoea D) ulcers
 
Answer & Explanation Answer: B) mumps

Explanation:

Mumps: This is a swelling caused by inflammation of parotid glands placed in front of our ear region. The Inflammation is caused by a virus.

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Filed Under: Biology

Q:

Man has _____ pairs of salivary glands

A) 3 B) 4
C) 6 D) 8
 
Answer & Explanation Answer: A) 3

Explanation:

Salivary glands of man are 3 pairs = 6. They are one pair of parotid glands, one pair of sub-maxillary or sub-mandibular glands and one pair of sub-lingual glands.

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Filed Under: Biology

Q:

Stainless steel contains steel and 

A) manganese B) vanadium
C) nickel D) chromium
 
Answer & Explanation Answer: D) chromium

Explanation:

Stainless steel contains 18% chromium and 82% steel

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Filed Under: Chemistry

Q:

Which of the following acts both as oxidising and reducing agent?

A) nitric acid B) ammonia
C) nitrous acid D) nitrogen peroxide
 
Answer & Explanation Answer: C) nitrous acid

Explanation:

Nitrous acid act as an oxidising agent because it oxidises potassium iodide to iodine. It is also a reducing agent because it decolourises acidified potassium permanganate solution.

Nitric acid acts only as an oxidising agent

Ammonia acts only as a reducing agent

Nitrogen peroxide acts only as an oxidising agent.

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Filed Under: Chemistry

Q:

Water always contains hydrogen and oxygen in the ratio 1:8 by weight.This is in accordance with the 

A) Law of Multiple Proportions B) Law of Definite Proportion
C) Law of Conservation of mass D) Law of Reciprocal Proportions
 
Answer & Explanation Answer: B) Law of Definite Proportion

Explanation:

The Law of Definite Proportion states that the same compound, wherever found or however made, always contains the same elements combined together in the same fixede ratio by weight.

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Filed Under: Chemistry

Q:

A boy sitting in a train moving with a uniform velocity drops a coin outside. A man standing outside the train will find the trajectory of the coin to be

A) a parabola B) a circle
C) a horizontal straight line D) a vertical straight line
 
Answer & Explanation Answer: A) a parabola

Explanation:

Parabola, because when the coin is dropped at a particular point, it has the same velocity as the running train. So by Newton's first law, it continues its motion horizontally with that velocity. But then, it is also pulled down by earth's gravity continuously. In this situation its horizontal motion gives way to the parabolic motion until it reaches the ground.

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Filed Under: Physics

Q:

When was the demand for a separate Telangana hit a turning point on?

Answer

The demand for a seperate Telangana hit a turning point on December 16,2010 when around 12-15 lakh attended the 'Telangana Maha Garjana' at Warangal in Andhra pradesh. The rally ste off a chain of events that culminated in the Centre agreeing to form a Telangana state.

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Subject: Indian Politics

Q:

Cell phone users have found that tariff plans are not as attractive as promoted by telecom companies and complained to regulatory authority about the same.

 

Courses of action:

I. The regulatory authority should direct telecom companies to be trasparent on the tariff structure of all plans

II. The government should restrict the number of telecom companies operating in the country.

A) If only course of action I follows B) If only course of action II follows
C) If either course of action I or II follows D) If both courses of action I and II follow
 
Answer & Explanation Answer: A) If only course of action I follows

Explanation:

Being " not as attractive as promoted " is a clear case of  hiding things. Hence " transparency " is the answer to the problem and I folloes. II goes against the spirit of free market and is not relevant to the problem either.

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Filed Under: Statement and Courses of Action