हिंदी

Why Should Curd and Sour Substances Not Be Kept in Brass and Copper Vessels? - Science

Advertisements
Advertisements

प्रश्न

 Why should curd and sour substances not be kept in brass and copper vessels?

संक्षेप में उत्तर

उत्तर १

Curd and other sour substances contain acids. Therefore, when they are kept in brass and copper vessels, the metal reacts with the acid to liberate hydrogen gas and harmful products, thereby spoiling the food.

shaalaa.com

उत्तर २

Curd and sour food substances contain acids; these acidic substances have a possibility of reacting with the metal. If this reaction takes place then it can cause food poisoning and damage people’s health.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 2: Acids, Bases and Salts - Intext Questions [पृष्ठ २२]

APPEARS IN

एनसीईआरटी Science [English] Class 10
अध्याय 2 Acids, Bases and Salts
Intext Questions | Q 1 | पृष्ठ २२

वीडियो ट्यूटोरियलVIEW ALL [2]

संबंधित प्रश्न

Dilute NaOH can be tested with
(a) red litmus paper
(b) blue litmus paper
(c) lime water
(d) Na2CO3


Write a word equation and then a balanced equation for the reaction taking place when:

Dilute hydrochloric acid reacts with magnesium ribbon.


Write a word equation and then a balanced equation for the reaction taking place when:

Dilute hydrochloric acid reacts with iron filings.


Equal lengths of magnesium ribbons are taken in test tubes A and B. Hydrochloric acid (HCl) is added to test tube A, while acetic acid (CH3COOH) is added to test tube B. In which test tube will the fizzing occur more vigorously, and why?


Complete and balance the following chemical equations

Na2 CO3 (s) + HCI (aq) →


Fill in the blank in the following sentences:

Substances do not show their acidic properties without.......................... .


A solution reacts with zinc granules to give a gas which burns with a 'pop' sound. The solution contains:
(a) Mg(OH)2
(b) Na2CO3
(c) NaCl
(d) HCl


Name the gas evolved when zinc granules are treated/heated with:

hydrochloric acid solution


What ions are present in the solutions of following substances? (write the symbols only)

 Sulphuric acid


What ions are present in the solutions of following substances? (write the symbols only)

Potassium hydroxide


Write the chemical formula of  soda ash?


State two uses each of the following compounds:

 Sodium hydroxide


If you take some distilled water in a test-tube, add an equal amount of acetic acid to it, shake the test-tube well and leave it undisturbed on the test-tube stand, then after about 5 minutes what would you observe?
(A) There is a layer of water over the layer of acetic acid.
(B) A precipitate is setting at the bottom of the test-tube.
(C) Bubbles of colourless gas are coming out of the test-tube.
(D) There is a clear, colourless transparent solutions in the test-tube.


Acids turn blue litmus paper to ______.


Egg shell is made up of ____________.


Calcium phosphate is present in tooth enamel. Its nature is


Which of the following substance will not give carbon dioxide on treatment with dilute acid?


Solutions of acids conduct ______.


______ & ______ metals do not react with HCl or HNO3.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×