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Q:

The alpha-particles are

A) high energy electrons B) positively charged hydrogen irons
C) high energy x ray radiations D) double positively charged helium nuclei
 
Answer & Explanation Answer: D) double positively charged helium nuclei

Explanation:
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Filed Under: Chemistry

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Q:

The protoplasm of a child is exactly the same as that of its

A) mother B) father
C) grandfather D) identical twin
 
Answer & Explanation Answer: D) identical twin

Explanation:

Though all living organisms  are made of protoplasm each individual has a different composition however slight it be. In identical twins the same cell divides into two and each one develops into one person. So the genitic make-up and type of protoplasm are exactly the same.

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Filed Under: Biology

10 5343
Q:

Which ionization process requires the most energy?

A) C3+ (g) → C4+ (g) + e- B) C (g) → C+ (g) + e-
C) C2+ (g) → C3+ (g) + e- D) C+ (g) → C2+ (g) + e-
 
Answer & Explanation Answer: A) C3+ (g) → C4+ (g) + e-

Explanation:

We know that each successive IE is greater than the previous one, because each ionization process removes one electron and hence increases the total attractive force on the remaining electrons from the nucleus. Hence, C3+ (g) → C4+ (g) + e- needs more energy.

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Filed Under: Chemistry
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1 5341
Q:

What are the sides of the dna ladder made of

A) nitrates and sugars B) sugars and hydrates
C) sugars and phosphates D) phosphates and nitrates
 
Answer & Explanation Answer: C) sugars and phosphates

Explanation:

DNA is a double-stranded molecule twisted into a helix. The shape of DNA is a double helix, which is like a twisted ladder. The sides of the ladder are made of alternating sugar and phosphate molecules. Deoxyribose, which is a pentose, and a phosphate group are the two molecules together form the two sides of the DNA. The rungs of the ladder are pairs of 4 types of nitrogen bases.

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Filed Under: General Science
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5 5341
Q:

Which of the following occurred in the presence of tetrodotoxin?

A) The number of action potentials decreased. B) The size of the action potential increased.
C) The number of action potentials increased. D) The size of the action potential decreased.
 
Answer & Explanation Answer: A) The number of action potentials decreased.

Explanation:
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Filed Under: Biology
Exam Prep: AIEEE

6 5338
Q:

The element common to all acids is

A) Hydrogen B) Oxygen
C) carbon D) Sulphur
 
Answer & Explanation Answer: A) Hydrogen

Explanation:

Hydrogen is the common element in all acids.

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Filed Under: Chemistry
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Q:

' Mohs scale ' is used to indicate the

A) degree of brittleness of a substance B) degree of hardness of mineral
C) degree of viscosity of a liquid D) degree of elasticity of a material
 
Answer & Explanation Answer: B) degree of hardness of mineral

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Filed Under: World Geography

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Q:

Full convertibility of a rupee means ?

A) Determination of rate of exchange between rupee and foreign currencies freely by the market forces of demand and supply B) Repayment of loans in terms of rupees
C) Payment for imports in terms of rupees D) Purchase of foreign exchange for rupees freely
 
Answer & Explanation Answer: A) Determination of rate of exchange between rupee and foreign currencies freely by the market forces of demand and supply

Explanation:
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Filed Under: Indian Economy
Exam Prep: Bank Exams , CAT
Job Role: Bank Clerk , Bank PO

5 5333