हिंदी
सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

Statements Given Below Are Incorrect. Write the Correct Statements : Bronze is a Mixture of 10% Copper, 80% Zinc and 10% Tin. - Chemistry

Advertisements
Advertisements

प्रश्न

Statements given below are incorrect. Write the correct statements : 

Bronze is a mixture of 10% copper, 80% zinc and 10% tin.  

एक पंक्ति में उत्तर

उत्तर

Bronze is a mixture of 80% copper, 10% zinc and 10% tin.

 
shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 6: Metals and Non-metals - Additional questions 1

APPEARS IN

सेलिना Concise Chemistry [English] Class 7 ICSE
अध्याय 6 Metals and Non-metals
Additional questions 1 | Q 2.2

संबंधित प्रश्न

Which property of graphite is utilised in making electrodes?


Fill in the following blank with suitable word:

Brass is an alloy of copper and .........


What is an alloy? Give two examples of alloys.


Mention two uses of the following metals and non-metals  

Gold 


Give reasons  

Aluminium is used in making aircrafts.  


Write ‘true’ or ‘false’ for the following statement. 

Iodine acts as an antiseptic in the form of a tincture of iodine. 


Fill in the blank spaces by choosing the correct words from the given list. 

List: amalgam, chlorine, gallium, sodium chloride, silver chloride 

______ is a liquid metal. 

 


Take an element from an alkali metal and one from an alkaline earth metal and write an equation for their action with:

Oxygen


Write name.

Molecular formula of the common ore of aluminium.


Write scientific reason.

Anodes need to be replaced from time to time during the electrolysis of alumina.


With reference to the following metals state their use in daily life metal:

Magnesium


Give a reason why iron objects rust easily but the iron pillar at Qutab Minar has not rusted over the years.


On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.

An amorphous substance which turns from pale green to black on strong heating evolving a colourless, acidic gas as the only gaseous product.


The most abundant element in the universe is ____________.


Which of the following two combinations are correct?

 

  Metal Gas Evolved
(i) Copper Yes
(ii) Iron Yes
(iii) Magnesium No
(iv) Zinc Yes

The ability of metals to be drawn into thin wire is known as


Match the following

i. Softest metal a. Copper
ii. Hardest metal b. Sodium
iii. Hardest non–metal c. Osmium
iv. Ductility d. Diamond

X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information, complete the following:

Metal atoms tend to have a maximum of ______ electrons in the outermost shell.


X [2, 8, 7] and Y [2, 8, 2] are two elements. Using this information, complete the following:

______ is the reducing agent.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×