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प्रश्न
Fill in the blank
A chemical compound that makes up the striking heads of match sticks is ______
उत्तर
A chemical compound that makes up the striking heads of match sticks is sulphur.
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संबंधित प्रश्न
Explain the meaning of malleable.
Choose the correct answer from the options given below :
The two main metals in Bronze are:
(A) Copper and zinc
(B) Copper and lead
(C) Copper and nickel
(D) Copper and tin
Name the gas that is produced in the given case:
The reaction of ethanol and sodium.
Name the non-metal which is used as a rocket fuel (in liquid form).
Name a non-metal that is used for cancer therapy
Fill in the blank:
A metal stored in kerosene oil is _______
Write ‘True’ or ‘False’ in front of following statements.
Non-metals are poor conductors of electricity.
State two important uses of following non-metal
iodine
What is an amalgam? How does an amalgam different from an alloy?
Name:
two metallic oxides which are amphoteric
Explain how the activity series accounts for each of the following:
reaction with acids
What are the metals that make the alloys brass and bronze?
Name two metalloids.
Ankita bought some Glucose Powder. She felt is was adulterated with starch powder. How would she test it?
Differentiate between metals and non-metals with reference to –
(a) number of electrons in outer or valence shell
(b) formation of cation and anion
(c) reaction with dilute acids.
Select the appropriate option for the following statement:
The element from the halogen family which is most abundant
Give two examples of alloy.
Non-metals form covalent chlorides because ____________.
Compounds obtained from non–living sources are called ______.
Reason out
Sulphur is used in the vulcanization of rubber.
