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Q:

In national income accounting, government purchases include

A) Federal B) Local
C) State D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

In national income accounting, government purchases by Local, State and Federal governments.

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Filed Under: Indian Economy
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Q:

Blisters are a sign of which classification of burn?

A) First-degree B) Second-degree
C) Third-degree D) Fourth-degree
 
Answer & Explanation Answer: B) Second-degree

Explanation:

Burns are classified into 4 degrees. They are ::

 

1. First-degree (superficial) burns. First-degree burns affect only the epidermis, or outer layer of skin.

2. Second-degree (partial thickness) burns. Second-degree burns involve the epidermis and part of the dermis layer of skin.

3. Third-degree (full thickness) burns.

4. Fourth-degree burns.

 

Blisters are a sign of Second-degree burns.

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Filed Under: General Science
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Q:

Which reaction occurs spontaneously?

A) Cl2(g) + 2NaF(aq)--> F2(g) + 2NaCl(aq) B) I2(s) + 2NaF(aq)--> F2(g) + 2NaI(aq)
C) Cl2(g) + 2NaBr(aq)-->Br2(l) + 2NaCl(aq) D) I2(s) + 2NaBr(aq)--> Br2(l) + 2NaI(aq)
 
Answer & Explanation Answer: C) Cl2(g) + 2NaBr(aq)-->Br2(l) + 2NaCl(aq)

Explanation:

In this chemical reaction chlorine change oxidation number from 0 to -1 (reduction) and bromine change oxidation number from -1 to 0 (oxidation).

Chlorine is stronger oxidation reagent than bromine.

In VIIA or group 17 (halogen elements) there are six elements: fluorine (F), chlorine (Cl), bromine (Br), iodine (I), astatine (At) and tennessin(Ts).

They have high electronegativity because they have seven valence electrons in their outermost energy level, so they can gain an electron to have the octet rule.  

Going down in the group, element are weaker oxidazing reagent and less reactive.

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Filed Under: Chemistry
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Q:

A molecule of dna is a polymer composed of

A) Amines B) Nuceotides
C) Chromosomes D) Fattyacids
 
Answer & Explanation Answer: B) Nuceotides

Explanation:

A molecule of DNA is a polymer composed of nucleotides. Each nucleotide is composed of a nitrogenous base, a five-carbon sugar (deoxyribose), and a phosphate group.

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Filed Under: Biology
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Q:

Which of the following is not a computer programming language?

A) NULL B) BASIC
C) PYTHON D) JAVA
 
Answer & Explanation Answer: A) NULL

Explanation:

A computer programming language is nothing but a language which is understand by the computer.

Examples of programming languages are Basic, C, Java, Python, ...

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Q:

Ocean between Africa and Australia?

A) Atlantic B) Pacific
C) Indian D) Arctic
 
Answer & Explanation Answer: C) Indian

Explanation:

Indian Ocean is between Africa and Australia and separates them.

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Filed Under: World Geography
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Q:

The cost price of three varieties of mangoes namely M, N and O is Rs. 20/kg, Rs. 40/kg and Rs. 50/kg respectively. Find the selling price of one kg of mango in which these three varieties of mangoes are mixed in the ratio of 2 : 3 : 5 such that there is a net profit of 20%?

A) Rs. 47 B) Rs. 49.2
C) Rs. 48.5 D) Rs. 50.3
 
Answer & Explanation Answer: B) Rs. 49.2

Explanation:

Total cost of all varieties of mangoes = 20 x 2 + 40 x 3 + 50 x 5 = 40 + 120 + 250 = Rs. 410

Then, cost of 1 kg mangoes = 410/10 = Rs. 41

To get 20% profit,

The rate at which the mangoes should be sell = 120/100 x 41 = Rs. 49.2

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Q:

A shopkeeper’s earning increases by 25% in first year but decreases by 4% in the next and so on. After 5 years his total earnings would be Rs. 72,000. What is his present earning?

A) Rs. 40,000 B) Rs. 45,000
C) Rs. 42,000 D) Rs. 46,000
 
Answer & Explanation Answer: A) Rs. 40,000

Explanation:

Let his present earnings be Rs. p

ATQ,

(125/100) x (96/100) x (125/100) x (96/100) x (125/100) x p = 72000

p = Rs. 40,000.

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Filed Under: Percentage
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