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Asked/Added Questions From NCERT: Science


Question 1. Asked on :17 September 2022:08:36:02 PM

What is a muscular force and electrostatic force


-Added by Jay Sharma Science » Muscular Force And Alert Electrostatic Force

Answer by: Jay Sharma

Jay Sharma

  the force is pull and push any object by our use of muscles are called muscular force

The force


-Answered by Jay Sharma On 17 September 2022:08:46:21 PM


Question 2. Asked on :10 September 2022:04:06:12 PM

what is fixing of nitrogen

-Added by Priya Saxena Science » Ch-2 Maicroorganisms

Answer by: Priya Saxena

Priya Saxena

 The Conversion of nitrogen into its compounds is known as fixing nitrogen 

-Answered by Priya Saxena On 10 September 2022:04:08:12 PM


Question 3. Asked on :24 May 2022:05:07:00 PM

 Why does flow of acid rain water into a river make the survival of aquatic life in the river difficult?

-Added by Shruti Srivastva Science » Acid Base Salt

Answer by: Jyoti Srivastva

Jyoti Srivastva

 Acid rain water has pH less than 5.6 and when this water flows into river, it lowers its pH and hence makes survival of aquatic life in river difficult

-Answered by Jyoti Srivastva On 25 May 2022:03:17:30 PM

Answer by: Manisha Kumari

Manisha Kumari

Acid rain water has pH less than 5.6 and when this water flows into river, it lowers its pH and hence makes the survival of aquatic life in river difficult

-Answered by Manisha Kumari On 24 May 2022:05:10:55 PM

Answer by: Shruti Srivastva

Shruti Srivastva

  Acid rain water has pH less than 5.6 and when this water flows into river, it lowers its pH and hence makes the survival of aquatic life in river difficult.

-Answered by Shruti Srivastva On 24 May 2022:05:08:36 PM


Question 4. Asked on :24 May 2022:05:07:57 PM

 The type of medicine used to treat indigestion is hyperacidity is 

(a) antibiotic

 (b) antacid

 (c) sulpha drug

 (d) pain killer

-Added by Manisha Kumari Science » Acid Base Salt

Answer by: Jyoti Srivastva

Jyoti Srivastva

(b) antacid

-Answered by Jyoti Srivastva On 25 May 2022:03:17:47 PM

Answer by: Manisha Kumari

Manisha Kumari

 Antacid.

-Answered by Manisha Kumari On 24 May 2022:05:08:29 PM


Question 5. Asked on :24 May 2022:05:05:17 PM

How will you test a gas which is liberated when HCl acid reacts with a active metal?

-Added by Shruti Srivastva Science » Acid Base And Salt

Answer by: Jyoti Srivastva

Jyoti Srivastva

 Hydrogen gas is liberated when an active metal reacts with hydrochloric acid. For testing presence of hydrogen gas, bring a burning candle near the mouth of the test tube in which the reaction is taking place. If the gas burns with a popping sound, then it can be concluded that it is hydrogen

-Answered by Jyoti Srivastva On 25 May 2022:03:18:23 PM

Answer by: Manisha Kumari

Manisha Kumari

Hydrogen gas is liberated when an active metal reacts with hydrochloric acid. For testing the presence of hydrogen gas, bring a burning candle near the mouth of the test tube in which the reaction is taking place. If the gas burns with a popping sound, then it can be concluded that it is hydrogen

-Answered by Manisha Kumari On 24 May 2022:05:06:44 PM

Answer by: Shruti Srivastva

Shruti Srivastva

 Hydrogen gas is liberated when an active metal reacts with hydrochloric acid. For testing the presence of hydrogen gas, bring a burning candle near the mouth of the test tube in which the reaction is taking place. If the gas burns with a popping sound, then it can be concluded that it is hydrogen.

-Answered by Shruti Srivastva On 24 May 2022:05:06:12 PM


Question 6. Asked on :24 May 2022:05:04:56 PM

  Which one of the following is a weak acid

(a) HCl

(b) H2CO3 

(c) HNO3 

(d) H2SO4

-Added by Manisha Kumari Science » Acid Base Salt

Answer by: Jyoti Srivastva

Jyoti Srivastva

(b)  H2CO3 

-Answered by Jyoti Srivastva On 25 May 2022:03:17:07 PM

Answer by: Shruti Srivastva

Shruti Srivastva

 (b) H2CO3.

-Answered by Shruti Srivastva On 24 May 2022:05:06:35 PM

Answer by: Manisha Kumari

Manisha Kumari

 (b) H2CO3

-Answered by Manisha Kumari On 24 May 2022:05:06:03 PM


Question 7. Asked on :24 May 2022:05:04:23 PM

Which solution is used to dissolve gold?

-Added by Shruti Srivastva Science » Acid Base And Salt

Answer by: Jyoti Srivastva

Jyoti Srivastva

Aqua Regia solution is used to dissolve gold.

-Answered by Jyoti Srivastva On 25 May 2022:03:18:47 PM

Answer by: Manisha Kumari

Manisha Kumari

 Aqua regia.

-Answered by Manisha Kumari On 24 May 2022:05:07:06 PM

Answer by: Shruti Srivastva

Shruti Srivastva

Aqua regia

-Answered by Shruti Srivastva On 24 May 2022:05:04:58 PM


Question 8. Asked on :24 May 2022:05:02:47 PM

 What is the pH of gastric juices released during digestion?

-Added by Shruti Srivastva Science » Acid Base And Salt

Answer by: Jyoti Srivastva

Jyoti Srivastva

1.5 pH to 3.5 pH

-Answered by Jyoti Srivastva On 25 May 2022:03:19:30 PM

Answer by: Manisha Kumari

Manisha Kumari

  1.5 to 3.5.

-Answered by Manisha Kumari On 24 May 2022:05:04:15 PM

Answer by: Shruti Srivastva

Shruti Srivastva

 1.5 to 3.5

-Answered by Shruti Srivastva On 24 May 2022:05:03:34 PM


Question 9. Asked on :24 May 2022:05:01:36 PM

Name two constituents of baking powder,.

-Added by Shruti Srivastva Science » Acid Base Salt

Answer by: Jyoti Srivastva

Jyoti Srivastva

 Baking powder is made up of two constituents that are' SODIUM HYDROGEN CARBONATE 'and 'TARTARIC ACID'. Baking powder is used as leavening agent which is produced by a mixture of an acid reacting with alkali.

-Answered by Jyoti Srivastva On 25 May 2022:03:20:23 PM

Answer by: Manisha Kumari

Manisha Kumari

Baking powder is made up of two constituents that are' SODIUM HYDROGEN CARBONATE 'and 'TARTARIC ACID'. Baking powder is used as a leavening agent which is produced by a mixture of an acid reacting with alkali.

-Answered by Manisha Kumari On 24 May 2022:05:03:05 PM

Answer by: Shruti Srivastva

Shruti Srivastva

 Baking powder is made up of two constituents that are SODIUM HYDROGEN CARBONATE and TARTARIC ACID. Baking powder is used as a leavening agent which is produced by a mixture of an acid reacting with alkali.

-Answered by Shruti Srivastva On 24 May 2022:05:02:17 PM


Question 10. Asked on :24 May 2022:05:00:14 PM

 Name a salt which does not contain water of crystallization.

-Added by Shruti Srivastva Science » Acid Base And Salt

Answer by: Jyoti Srivastva

Jyoti Srivastva

salts that do not contain Water of Crystallization are sodium nitrate, potassium chloride, potassium nitrate and barium sulphate.

-Answered by Jyoti Srivastva On 25 May 2022:03:21:07 PM

Answer by: Manisha Kumari

Manisha Kumari

 The salts that do not contain Water of Crystallization are sodium nitrate, potassium chloride, potassium nitrate and barium sulphate.

-Answered by Manisha Kumari On 24 May 2022:05:02:40 PM

Answer by: Shruti Srivastva

Shruti Srivastva

 The salts that do not contain Water of Crystallization are sodium nitrate, potassium chloride, potassium nitrate and barium sulphate

-Answered by Shruti Srivastva On 24 May 2022:05:01:05 PM


 

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