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Asked/Added Questions From NCERT:


Question 1. Asked on :25 August 2019:07:56:12 PM

 मेसोपोटामिया हथियार किसके बनते थे ?

-Added by roshni mental History » Ch 2

Answer:

Harshita Rathore
 कांसे के 

-Answered by Harshita Rathore On 26 August 2019:03:06:24 PM


Question 2. Asked on :25 August 2019:07:52:39 PM

 कांसा किसके मिश्रण से बनता है ?

-Added by roshni mental History » Ch 2

Answer:

Harshita Rathore
 ताम्बे तथा रांगा

-Answered by Harshita Rathore On 26 August 2019:03:06:43 PM


Answer:

Harshita Rathore
 गेहू , जो और मटर या मसूर के खेतो की सिचाई की जाती थी

-Answered by Harshita Rathore On 26 August 2019:03:07:26 PM


Question 4. Asked on :25 August 2019:07:38:19 PM

 मेसोपोटामिया की दो नदियों के नाम बताओ ?

-Added by roshni mental History » Ch 2

Answer:

Harshita Rathore
फारत और दजला नदी

-Answered by Harshita Rathore On 26 August 2019:03:07:56 PM


Question 5. Asked on :25 August 2019:07:22:09 PM

 How was fire useful to the early human ?

-Added by roshni mental History » Ch 2

Answer:

Akki chauhan
The control of fire enabled important changes in human behavior, health, energy expenditure, and geographic expansion. As a result of "domesticating" fire as previously achieved with plants and animals, humans were able to modify their environments to their own benefit.

-Answered by Akki chauhan On 26 August 2019:08:08:56 PM


Question 6. Asked on :25 August 2019:06:19:05 PM

 Why did early human paint on cave walls ?

-Added by roshni mental History » Ch 2

Answer:

Akki chauhan
Perhaps the cave man wanted to decorate the cave and chose animals because they were important to their existence. ... Prehistoric man could have used thepainting of animals on the walls of caves to document their hunting expeditions.

-Answered by Akki chauhan On 26 August 2019:08:04:25 PM


Question 7. Asked on :21 August 2019:07:08:25 PM

 Define drawings with example ?

-Added by anjali thakur Accountancy » Ch 2

Answer:

Master Purushottam

 Drawing is the amount of money or value of goods which the proprietor or partner withdraws for personal use. for example, withdrawal of cash by the proprietor for personal use

-Answered by Master Purushottam On 21 August 2019:11:07:50 PM


Question 8. Asked on :21 August 2019:05:00:29 PM

What is the common name of POP, and also write its uses?

-Added by Himanshi Verma Chemistry » Ch 2

Answer:

Himanshi Verma
The common name of POP(Plaster of Paris) is Calcium sulphate hemihydrate.

It uses are:-

1. Its used for supporting fractured bones.

2. It is used for making sufaces smooth.

3. It is used in many material and making in toys.

4. It is used for making statues.

-Answered by Himanshi Verma On 21 August 2019:05:15:13 PM


Question 9. Asked on :21 August 2019:04:55:33 PM

 Write the formula of washing soda and also write its uses?

-Added by Himanshi Verma Chemistry » Ch 2

Answer:

Himanshi Verma

 The formula of washing soda is Na2Co3.10H2o. Recrystallisation of sodium carbonate gives  washing soda. It is a basic salt.

Its uses are:-

1. It is used in glass, soap and paper industries.

2. It is used in manufacture of Borax.

3. It is used as cleaning agent for domestic purpose.

4. It is used for removing permanent hardness of water.

-Answered by Himanshi Verma On 21 August 2019:04:56:37 PM


Question 10. Asked on :21 August 2019:04:53:16 PM

 What is chlor- alkali reaction?

-Added by Himanshi Verma Chemistry » Ch 2

Answer:

Himanshi Verma

 When electricity is passed through an aqueous solution of sodium chloride it decomposes to form sodium hydroxide. The process is called the chlor-alkali alkali process because of the products formed: chlor for chlorine and alkali for Sodium Hydroxide. Chlorine gas is given off at the anode and hydrogen gas at the cathode.


An aqueous solution of sodium chloride is called brine.
2NaCl (aq) + 2H2O(l) ---(electrolysis)---> 2NaOH(aq) + Cl2(g) + H2(g).

-Answered by Himanshi Verma On 21 August 2019:04:54:18 PM


Question 11. Asked on :21 August 2019:01:52:46 PM

 What is meant by consumer's equilibrium?

-Added by nisha sheikh Economics » Ch 2

Answer:

Master Purushottam
Consumer's equilibrium refers to a situation when a consumer is having maximum satisfaction with his limited income and has no tendency to change his exciting way of expenditure.

-Answered by Master Purushottam On 24 August 2019:04:54:39 PM


Question 12. Asked on :21 August 2019:01:51:07 PM

How much is total utility at zero level of consumption?

-Added by nisha sheikh Economics » CH 2

Answer:

Master Purushottam

 Zero

-Answered by Master Purushottam On 21 August 2019:03:38:17 PM


Question 13. Asked on :21 August 2019:01:48:54 PM

 Define Marginal Rate of Substitution (MRS) ?

-Added by nisha sheikh Economics » Ch 2

Answer:

Master Purushottam
Marginal rate of substitution refers to the rate at which commodities can be substituted with each other, so that the total satisfaction of consumer remains the same.

-Answered by Master Purushottam On 24 August 2019:04:54:58 PM


Question 14. Asked on :21 August 2019:01:46:48 PM

 Write the Assumptions of Indifference Curve?

-Added by nisha sheikh Economics » CH 2

Answer:

Master Purushottam
The assumptions of the ordinal theory are the following:
(1) The prices of the two goods are given. (2) The consumer's tastes, habits and income remain the same throughout the analysis. (3) He prefers more of X to less of Y or more of Y to less of X. (7) An indifference curve is negatively inclined sloping downward.

-Answered by Master Purushottam On 24 August 2019:04:55:06 PM


Question 15. Asked on :21 August 2019:01:44:45 PM

 Write the Properties of Indifference Curve?

-Added by nisha sheikh Economics » Ch 2

Answer:

Master Purushottam

1. Indifference curve are downward sloping.

2. Higher indifference curves are preferred to lower ones.

3. Indifference curves do not intersect.

4. Indifference curves are convex.

-Answered by Master Purushottam On 24 August 2019:04:55:21 PM


Question 16. Asked on :20 August 2019:07:56:28 PM

What  is galvanisation?

-Added by Himanshi Verma Science » Ch 2

Answer:

Himanshi Verma

 Coating of a thin layer of zinc on  metal surface by electroplating is called galvanisation. 

-Answered by Himanshi Verma On 20 August 2019:07:59:48 PM


Question 17. Asked on :20 August 2019:07:38:16 PM

Define a budget set ?


-Added by anjali thakur Economics » Ch 2

Answer:

Master Purushottam

 Budget set is a set of all possible combination of the two goods which a consumer can afford, given his income prices in the market.

-Answered by Master Purushottam On 20 August 2019:07:41:54 PM


Question 18. Asked on :20 August 2019:07:34:02 PM

 What is ordinal utility?

-Added by nisha sheikh Hindi » Ch 2

Answer:

anjali thakur

 Ordinal utility is the utility expressed in ranks.

-Answered by anjali thakur On 20 August 2019:08:02:41 PM


Question 19. Asked on :20 August 2019:07:27:35 PM

 Define marginal utility

-Added by anjali thakur Economics » Ch 2

Answer:

Master Purushottam

 Marginal utility is the additional utility derived from consumption of one more unit of a commodity.


-Answered by Master Purushottam On 24 August 2019:04:58:08 PM


Question 20. Asked on :20 August 2019:07:24:07 PM

 Define utility 

-Added by anjali thakur Economics » Ch 2

Answer:

Master Purushottam
 Utility is the want satisfying power of a commodity.

-Answered by Master Purushottam On 24 August 2019:04:58:16 PM


Question 21. Asked on :19 August 2019:10:49:13 PM

 What is the chemical name of sand?

-Added by Himanshi Verma Chemistry » Ch 2

Answer:

Himanshi Verma

 Silicon dioxide.

-Answered by Himanshi Verma On 19 August 2019:10:56:21 PM


Question 22. Asked on :04 March 2019:02:52:07 PM

 Is milk is the example of Tyndall Effect. Why?


-Added by Himanshi Verma Science » CH 2

Answer:

Himanshi Verma

 This is because colloids have suspension of small particles, from 1 – 1000 nanometres in size which can scatter light falling on them, a phenomenon called asTyndall effect. In the above question, only b) milk and d) starch solution show Tyndall effect as they are colloids

-Answered by Himanshi Verma On 08 March 2019:05:18:28 PM


 

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