Q:

Find the power of a convex lens if the image formed is at a distance of 25 cm from the lens when the object is placed on the other side of the lens at 12 cm from the optical centre?

A) -4.33 diopters	B) 12.33 diopters
C) -12.33 diopters	D) 4.33 diopters

Answer & Explanation Answer: B) 12.33 diopters

Explanation:

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Filed Under: Physics
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Q:

In which one of the following States is Loktak Lake situated?

A) Sikkim	B) Himachal Pradesh
C) Manipur	D) Meghalaya

Answer & Explanation Answer: C) Manipur

Explanation:

Loktak Lake:the largest freshwater (sweet) lake in North -East India, also called the only Floating lake in the world due to the floating phumdis (heterogeneous mass of vegetation, soil, and organic matters at various stages of decomposition) on it, is located near Moirang in Manipur state, India. The etymology of Loktak is Lok = "stream" and tak = "the end"

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Filed Under: Indian Geography
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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

Explanation:

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Q:

Who formulated ‘the atomic theory’ of a matter?

A) Avogadro	B) Dalton
C) Newton	D) Pascal

Answer & Explanation Answer: B) Dalton

Explanation:

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Q:

In an acid base reaction which product is produced along with a salt?

A) Hydrogen gas	B) Water
C) Oxygen gas	D) Carbon dioxide

Answer & Explanation Answer: B) Water

Explanation:

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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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Filed Under: Chemistry
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Q:

In the following questions, one part of the sentence may have an error. Find out which part of the sentence has an error and click the buttoncorresponding to it. If the sentence is free from error, click the "No error" option.

There was a (A)/ comparison between (B)/ you and he (C)/ no error (D)

A) A	B) B
C) C	D) D

Answer & Explanation Answer: C) C

Explanation:

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Filed Under: English
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Q:

Similipal Tiger Reserve is in which state?

A) Maharashtra	B) Andhra Pradesh
C) Chhattisgarh	D) Odisha

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