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Q:

Which one is the pure element

A) glass B) cement
C) sodium D) None of these
 
Answer & Explanation Answer: C) sodium

Explanation:
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Filed Under: Chemistry

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Q:

Which of the following is the strongest acid?

A) ClCH2COOH B) BrCH2COOH
C) FCH2COOH D) ICH2COOH
 
Answer & Explanation Answer: C) FCH2COOH

Explanation:

Which_of_the_following_is_the_strongest_acid1552992978.jpg image

FCH2COOH is the strongest acid out of all.

Since the electron withdrawing inductive effect (-I effect) of the halogens decreases in the order of F>Cl> Br> I , therefore the acidic strength of the α- halo acids decreases in the same order.

 

FCH2COOH  >  ClCH2COOH   >   BrCH2COOH   >   ICH2COOH.

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Filed Under: Chemistry
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24 13239
Q:

Try the logical puzzle?

logical_puzzle1538026382.jpg image

A) 24 B) 25
C) 13 D) 12
 
Answer & Explanation Answer: C) 13

Explanation:

The man has 12 sons and the 12 sons has each one sister.

=> 12 sons + 1 sister = 13 children.

 

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Filed Under: Logic Puzzles
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49 13233
Q:

Ankara is the capital of which country?

A) Uruguay B) Turkey
C) Uganda D) Vanuatu
 
Answer & Explanation Answer: B) Turkey

Explanation:
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Filed Under: Country Capitals

92 13232
Q:

Diversification is important in investing because

A) It ensures that you only make low-risk investments. B) It helps you to balance your risk across different types of investments.
C) It helps you gain the highest rate of return despite any risks. D) It increases your overall risk, which guarantees that you will make more money.
 
Answer & Explanation Answer: B) It helps you to balance your risk across different types of investments.

Explanation:
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Filed Under: Finance
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6 13212
Q:

To copy cell contents using drag and drop press the

A) Shift key B) Alt key
C) End key D) Ctrl key
 
Answer & Explanation Answer: D) Ctrl key

Explanation:

Ctrl key is to be pressed To copy cell contents using drag and drop.

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Filed Under: Computer
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15 13207
Q:

Which of the following is present in the largest amount in terms of percent by mass in the earth's crust

A) Silicon B) Oxygen
C) Carbon D) Calcium
 
Answer & Explanation Answer: B) Oxygen

Explanation:
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Filed Under: World Geography

26 13194
Q:

Name a common greenhouse gas containing only hydrogen and oxygen?

A) CH4 B) O3
C) H2O D) NO
 
Answer & Explanation Answer: C) H2O

Explanation:

The common greenhouse gas containing only hydrogen and oxygen is H2O, this is water vapor.

The common greenhouse gases are water vapor, carbon dioxide, methane, nitrous oxide, and ozone.

The composition (chemical formula) of those gases are:

Water vapor: H2O
Carbon dioxide: CO2
Methane: CH4
Nitrous oxide: NO
Ozone: O3.

As you see the only one of those that contains only hydrogen and oxygen is H2O, water vapor.

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Filed Under: General Awareness
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