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Q:

All isotopes of the same element have ____________

A) different atomic numbers and different atomic mass B) different atomic numbers and the same atomic mass
C) the same atomic number but different atomic masses D) the same atomic number and the atomic mass
 
Answer & Explanation Answer: C) the same atomic number but different atomic masses

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Filed Under: Chemistry

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Q:

Which of the following is a CORRECT statement?

A) Only compounds are pure substance B) Compounds are impure substance
C) Only elements are pure substance D) Both compounds and elements are pure substance
 
Answer & Explanation Answer: D) Both compounds and elements are pure substance

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Filed Under: Chemistry
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Q:

Deficiency of which vitamin causes night blindness?

A) Vitamin K B) Vitamin C
C) Vitamin B1 D) Vitamin A
 
Answer & Explanation Answer: D) Vitamin A

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Filed Under: Biology
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Q:

Which type of pathogen causes the water­borne disease Salmonellosis?

A) Algal B) Parasitic
C) Bacterial D) Viral
 
Answer & Explanation Answer: C) Bacterial

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Filed Under: Biology
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Q:

In which of the following tissues are the cells living, elongated and irregularly thickened at the corners?

A) Parenchyma B) Sclerenchyma
C) Aerenchyma D) Collenchyma
 
Answer & Explanation Answer: D) Collenchyma

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Q:

Who is the current supreme commander of Indian Defense forces?

A) Narendra Modi B) Sumitra Mahajan
C) Pranab Mukherjee D) Lt. Gen Dalbir Singh
 
Answer & Explanation Answer: C) Pranab Mukherjee

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Q:

Find the acceleration (in m/s2) produced in a body of mass 4 kg when a force of 24 N is applied on it.

A) 96 B) 6
C) 12 D) 48
 
Answer & Explanation Answer: B) 6

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Q:

A force of 20 N displaces an object through 2 m and does a work of 20 J. The angle between the force and displacement is

A) 60 deg B) 0 deg
C) 90 deg D) 30 deg
 
Answer & Explanation Answer: A) 60 deg

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