हिंदी

Generally metals react with acids to give salt and hydrogen gas. Which of the following acids does not give hydrogen gas on reacting with metals (except Mn and Mg)? - Science

Advertisements
Advertisements

प्रश्न

Generally metals react with acids to give salt and hydrogen gas. Which of the following acids does not give hydrogen gas on reacting with metals (except Mn and Mg)?

विकल्प

  • H2SO4

  • HCl

  • HNO3

  • All of these

MCQ
Advertisements

उत्तर

HNO3

Explanation -

Out of the given options, only nitric acid when reacting with metals does not give hydrogen gas instead nitric acid is a very strong oxidising agent and it oxidises the hydrogen gas formed to water and thus hydrogen gas is not evolved.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 3: Metals and Non-metals - Multiple Choice Questions [पृष्ठ १९]

APPEARS IN

एनसीईआरटी एक्झांप्लर Science [English] Class 10
अध्याय 3 Metals and Non-metals
Multiple Choice Questions | Q 7. | पृष्ठ १९

संबंधित प्रश्न

Metal A has electronic configuration (2, 8, 1) and metal B has (2, 8, 8, 2). Which is more reactive? Why? Identify these metals.


Iron is
(a) More reactive than zinc
(b) More reactive than aluminium
(c) Less reactive than copper
(d) Less reactive than aluminium


You must have seen tarnished copper vessels being cleaned with lemon or tamarind juice. Explain why these sour substances are effective in cleaning the vessels.


The reaction of an iron nail with copper sulphate solution is ........... reaction.

(a) Combination

(b) Displacement

(c) Double displacement

(d) Decomposition


A student added few pieces of aluminium metal to two test tubes A and B containing aqueous solutions of iron sulphate and copper sulphate. In the second part of her experiment, she added iron metal to another test tubes C and D containing aqueous solutions of aluminium sulphate and copper sulphate.

In which test tube or test tubes will she observe colour change? On the basis of this experiment, state which one is the most reactive metal and why.


State whether the following statement is true or false:
Non-metals react with dilute acids to produce a gas which burns with a 'pop' sound.


What changes in the colour of iron nails and copper sulphate solution do you observe after keeping the iron nails dipped in copper sulphate solution for about 30 minutes?


Write equation for the reaction of magnesium with oxygen.


What will happen if a strip of zinc is immersed in a solution of copper sulphate?


What happens when a rod of zinc metal is dipped into a solution of copper sulphate? Give chemical equation of the reaction involved.


Why is white phosphorus kept immersed under water?


What special name is given to substances like aluminium oxide.


The elements whose oxides can turn phenolphthalein solution pink are:
(a) Na and K
(b) K and C
(c) Na and S
(d) K and P


The least reactive metal among the following is:
(a) sodium
(b) silver
(c) copper
(d) lead


A metal less reactive and another metal more reactive than hydrogen are:
(a) aluminium and lead
(b) iron and magnesium
(c) copper and tin
(d) copper and mercury


An element E reacts with water to form a solution which turns phenolphthalein solution pink. The element E is most likely to be:
(a) S
(b) Ca
(c) C
(d) Ag


Rewrite the following statement by selecting the correct option.
A solution of Al2(SO4)3 in water is _____________.


Aluminium is used for making cooking utensils. Which of the following properties of aluminium are responsible for the same?

(i) Good thermal conductivity

(ii) Good electrical conductivity

(iii) Ductility

(iv) High melting point


Generally, metals are solid in nature. Which one of the following metals is found in liquid state at room temperature?


Metals are generally hard. Which of the following metals is an exception and can be cut with a knife?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×