Question

Hello guys! please help me to solve the above MCQs ​

Answer 1

$\huge{\underline{\boxed{\frak \purple{Answer:-}}}}$

AnswEr 67 :

$\maltese$$\normalsize{\boxed{\sf \green{Option A}}}$

⋆ Barium sulphate is formed.

⋆

AnswEr 68

$\maltese$$\normalsize{\boxed{\sf \blue{Option B}}}$

⋆ Bromine gas is formed.

AnswEr 69

$\maltese$$\normalsize{\boxed{\sf \pink{Option B}}}$

⋆ Copper is displaced from its solution.

AnswEr 70

$\maltese$$\normalsize{\boxed{\sf \orange{Option C}}}$

⋆ Lead chloride will be formed.

AnswEr 71

$\maltese$$\normalsize{\boxed{\sf \red{Option A}}}$

⋆ Copper will be displaced from its solution.

AnswEr 72

$\maltese$$\normalsize{\boxed{\sf \green{Option A}}}$

⋆ Barium sulphate is formed.

AnswEr 73

$\maltese$$\normalsize{\boxed{\sf \blue{Option D}}}$ ⋆ No reaction takes place.

AnswEr 74

$\maltese$$\normalsize{\boxed{\sf \pink{Option A}}}$

⋆Zinc sulphate is formed.

AnswEr 75

$\maltese$$\normalsize{\boxed{\sf \orange{Option B}}}$

⋆They are painted to prevent thier contact with moisture present in air.

AnswEr 76

$\maltese$$\normalsize{\boxed{\sf \red{Option A}}}$

AnswEr 77

$\maltese$$\normalsize{\boxed{\sf \green{Option A}}}$

⋆ By adding antioxidants in food.

AnswEr 78

$\maltese$$\normalsize{\boxed{\sf \blue{Option C}}}$

⋆ Option C is correct.

AnswEr 79

$\maltese$$\normalsize{\boxed{\sf \pink{Option B}}}$

⋆Reaction B is not balanced.