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Q:

Nematodes and arthropods both

A) are suspension feeders B) have ciliated larvae
C) develop an anus from the blastopore (pore) formed in the gastrula stage D) grow by shedding their exoskeleton
 
Answer & Explanation Answer: D) grow by shedding their exoskeleton

Explanation:
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Q:

Improve the bracketed part of the sentence.

Taj Mahal is (a worth seeing monument) in Agra.

A) a monument to see its worth B) a monument worth seeing
C) one of worth seeing monuments D) No improvement
 
Answer & Explanation Answer: B) a monument worth seeing

Explanation:
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Q:

Which is an example of an endothermic reaction?

A) combustion B) mix of CaO with water
C) coal is burnt D) photosynthesis
 
Answer & Explanation Answer: D) photosynthesis

Explanation:

A chemical reaction in which involves the absorption of heat from the environment is called a Endothermic reaction. 

Examples : Dissolving ammonium chloride in water, photosynthesis, melting ice cubes, mixing of potassium chloride with water,...

 

In the contrast, chemical reactions involving release of heat are known as exothermic reactions.

Examples : Combustion, coal is burnt, mix of CaO with water,...

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Q:

Choose the word that best defines the given phrase‘Prolonged inability to sleep’

A) Amnesia B) Utopia
C) Nausea D) Insomnia
 
Answer & Explanation Answer: D) Insomnia

Explanation:
Amnesia means a partial or total loss of memory.
Utopia means an imagined place or state of things in which everything is perfect.
Nausea means a feeling of sickness with an inclination to vomit.
Insomnia means habitual sleeplessness; inability to sleep
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Q:

Covalent bonds are formed when electrons are

A) Transfer of electrons B) Sharing of electrons
C) Dividing of electrons D) All of the above
 
Answer & Explanation Answer: B) Sharing of electrons

Explanation:

Covalent bonding occurs when pairs of electrons are shared by atoms. Atoms will covalently bond with other atoms in order to gain more stability, which is gained by forming a full electron shell. By sharing their outer most (valence) electrons, atoms can fill up their outer electron shell and gain stability.

 

Examples of compounds with covalent bonds ::

HCl, CO2, O2,... 

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Q:

In the following question, a sentence has been given in Direct/Indirect speech. Out of the four alternatives suggested, select the one which best expresses the same sentence in Indirect/Direct speech.

Rashmi said to me, "Where is the telephone exchange"?

A) Rashmi asked me that where the telephone exchange was. B) Rashmi asked me where the telephone exchange was.
C) Rashmi asked me where was the telephone exchange. D) Rashmi wanted to know where the telephone exchange was.
 
Answer & Explanation Answer: B) Rashmi asked me where the telephone exchange was.

Explanation:
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Q:

A sentence has been given in Active/Passive Voice. Out of the four given alternatives, select the one which best expresses the same sentence inPassive/Active Voice

Who burned the food?

A) By who was this food burned? B) By whom was that food burned?
C) By whom was the food burned? D) By whom is this food burned?
 
Answer & Explanation Answer: A) By who was this food burned?

Explanation:

By whom was the food burned?

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Q:

Supply curves tend to be

A) more elastic in the long run, because there is time for firms to enter or leave the industry. B) less elastic in the long run, because there is time for firms to enter or leave an industry.
C) perfectly elastic in the long run, because consumer demand will have sufficient time to adjust fully to changes in supply. B. D) None of the above
 
Answer & Explanation Answer: A) more elastic in the long run, because there is time for firms to enter or leave the industry.

Explanation:

Supply curves tend to be more elastic in the long run, because there is time for firms to enter or leave the industry.

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