Questions

Q:

A sarcomere is best described as a

 

A) fixed structural unit within a myofibril bounded by Z lines. B) moveable structural unit within a myofibril bounded by H zones.
C) moveable structural unit within a myofibril bounded by Z lines. D) fixed structural unit within a myofibril bounded by A bands.
 
Answer & Explanation Answer: C) moveable structural unit within a myofibril bounded by Z lines.

Explanation:
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Q:

What is formed when helium atom loses one electron?

 

A) Proton B) Positive helium ion
C) Negative helium ion D) Alpha particle
 
Answer & Explanation Answer: B) Positive helium ion

Explanation:
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Q:

The well-known dialogue between Nachiketa and Yama is mentioned in which Upanishada?

 

A) Chhandogyopanishad B) Mundkopanishad
C) Kathopanishad D) Kenopanishad
 
Answer & Explanation Answer: C) Kathopanishad

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Q:

Which of the following statements about the reaction below are INCORRECT?

2Pb + C  2Pb + CO2


A. Carbon di-oxide is getting, oxidised
B. Lead is getting reduced
C. Carbon is oxidised
D. Lead oxide is getting reduced

A) A and C B) A and B
C) B and C D) A, B and C
 
Answer & Explanation Answer: B) A and B

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Q:

What has teeth but cannot bite?

A) Comb B) Saw
C) Zipper D) Gear
 
Answer & Explanation Answer: A) Comb

Explanation:

Saw, Zipper and Gear have teeth but can bite us. Comb have teeth but cannot bite.

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Q:

Bao dhaan is a variety of rice cultivated in which Indian state?

 

A) Assam B) Haryana
C) Telangana D) Odisha
 
Answer & Explanation Answer: A) Assam

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Q:

Elements having same atomic numbers but different mass number are called ______.

 

 

A) isotones B) Isotopes
C) isomopes D) isobar
 
Answer & Explanation Answer: B) Isotopes

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Q:

Group 8A of the periodic table contains the

 

A) least reactive metals B) most reactive nonmetals
C) most reactive metals D) least reactive nonmetals
 
Answer & Explanation Answer: D) least reactive nonmetals

Explanation:

Helium (He), Neon(Ne), Argon(Ar), Krypton (Kr), Xenon (Xe), Radon (Rn) and Ununoctium (Uuo) are present group 8A.

 

They have fully filled orbitals and hence are most stable amongst all the elements in the periodic table and are considered as least reactive least reactive non-metals.

 

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