Choose the correct answer from the options given below:

The two main metals in Bronze are:

• Copper and zinc

• Copper and lead

• Copper and nickel

• Copper and nickel

Fill in the blanks with the choices given in brackets.

Conversion of ethene to ethane is an example of _______(hydration/hydrogenation).

Fill in the blanks with the choices given in brackets.

_____(AgCl/PbCl₂), a white precipitate is soluble in excess NH₄OH.

Fill in the blanks with the choices given in brackets.

Higher the pH value of a solution, the more______(acidic/alkaline) it is.

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The aim of the Fountain Experiment is to prove that:

• HCl turns blue litmus red

• HCl is denser than air

• HCl is highly soluble in water

• HCl is highly soluble in water

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An element with the atomic number 19 will most likely combine chemically with the element atomic number is:

• 17
  
  

• 11
  
  

• 18
  
  

• 18
  
  

Fill in the blanks with the choices given in brackets.

Metals are good_____(oxidizing agent/reducing agents) because they are electron______(acceptor/donors).

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The particles present in strong electrolytes are:

• Only molecules

• Mainly ions

• Ions and molecules

• Ions and molecules

Fill in the blanks with the choices given in brackets.

Electrovalent compounds have ________(high/low) melting points.

Choose the correct answer from the options given below:

The ratio between the number of molecules in 2g of hydrogen and 32g of oxygen is:

[Given that H=1, O=16]

• 1:2

• 1:0.01

• 1:1

• 1:1