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B. Passage/Diagram Based Questions Stu...

B. Passage/Diagram Based Questions
Study the given passage and answer the following questions:
When a silvery grey powder of a solild (A) is mixed with a powerd of solid (B) no reaction occurs. But if the mixture is ignited and lighted using magnesium ribbon a reaction occurs with evolution of large amount of heat forming product (C) which settles down as liquid metal and the soild product (D) formed floats on the liquid (C). (C) in soild form reacts with moisture to form rust. The amount of heat generated during the reaction is so high that the reaction is used in welding of electric conductors, joints in railway tracks. Based on this information, answer the following questions.
Identify (A), (B) (C) and (D).

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B. Passage/Diagram Based Questions Study the given passage and answer the following questions: When a silvery grey powder of a solild (A) is mixed with a powerd of solid (B) no reaction occurs. But if the mixture is ignited and lighted using magnesium ribbon a reaction occurs with evolution of large amount of heat forming product (C) which settles down as liquid metal and the soild product (D) formed floats on the liquid (C). (C) in soild form reacts with moisture to form rust. The amount of heat generated during the reaction is so high that the reaction is used in welding of electric conductors, joints in railway tracks. Based on this information, answer the following questions. If (A) reacts with air on heating what will be the nature of oxide formed?

B. Passage/Diagram Based Questions Study the given passage and answer the following questions: When a silvery grey powder of a solild (A) is mixed with a powerd of solid (B) no reaction occurs. But if the mixture is ignited and lighted using magnesium ribbon a reaction occurs with evolution of large amount of heat forming product (C) which settles down as liquid metal and the soild product (D) formed floats on the liquid (C). (C) in soild form reacts with moisture to form rust. The amount of heat generated during the reaction is so high that the reaction is used in welding of electric conductors, joints in railway tracks. Based on this information, answer the following questions. Does oxide of (A) react with aqueous NaOH and/or HCI? Give balance chemical equations.

Knowledge Check

  • Read the following and answer any four questions When a silvery grey powder of a solid (A) is mixed with a powder of solid (B) no reaction occurs. But if the mixture is ignited and lighted using magnesium ribbon a reaction occurs with evolution of large amount of heat forming product (C) which settles down as liquid metal and the solid product (D) formed floats on the liquid (C). (C) in solid form reacts with moisture to form rust. The amount of heat generated during the reaction is so high that the reaction is used in welding of electric conductors, joints in railway tracks. Based on this information, Identify A and C?

    A
    A-Al and C-Fe
    B
    A-Fe and C-Al
    C
    A-Mg and C-Al
    D
    A-Al and C-Cu

  • Read the following and answer any four questions When a silvery grey powder of a solid (A) is mixed with a powder of solid (B) no reaction occurs. But if the mixture is ignited and lighted using magnesium ribbon a reaction occurs with evolution of large amount of heat forming product (C) which settles down as liquid metal and the solid product (D) formed floats on the liquid (C). (C) in solid form reacts with moisture to form rust. The amount of heat generated during the reaction is so high that the reaction is used in welding of electric conductors, joints in railway tracks. Based on this information, answer any four questions Amphoteric oxides are:

    A
    Metal oxides which do not react with acids but reacts with bases.
    B
    Metal oxides which reacts with both acids as well as bases.
    C
    Metal oxides which reacts with acids but do not react with bases.
    D
    Metal oxides which shows no reaction with either acids or bases.

  • Read the following and answer any four questions When a silvery grey powder of a solid (A) is mixed with a powder of solid (B) no reaction occurs. But if the mixture is ignited and lighted using magnesium ribbon a reaction occurs with evolution of large amount of heat forming product (C) which settles down as liquid metal and the solid product (D) formed floats on the liquid (C). (C) in solid form reacts with moisture to form rust. The amount of heat generated during the reaction is so high that the reaction is used in welding of electric conductors, joints in railway tracks. Based on this information, Identify B and D which are oxides of:

    A
    B-Fe, D-Al
    B
    B-Mg, D-Al
    C
    B-Al, D-Cu
    D
    B-Al, D-Fe

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    Explore conceptually related problems

    B. Passage/Diagram Based Questions Study the given passage and answer the following questions: When a silvery grey powder of a solild (A) is mixed with a powerd of solid (B) no reaction occurs. But if the mixture is ignited and lighted using magnesium ribbon a reaction occurs with evolution of large amount of heat forming product (C) which settles down as liquid metal and the soild product (D) formed floats on the liquid (C). (C) in soild form reacts with moisture to form rust. The amount of heat generated during the reaction is so high that the reaction is used in welding of electric conductors, joints in railway tracks. Based on this information, answer the following questions. Write the balanced chemical equation for the reaction. Name the type of reaction.

    Study the diagram given below and answer the following questions.

    Study the given experimental set-up and answer the following questions. Write the products formed in the above process:

    Read the following and answer any four questions When a silvery grey powder of a solid (A) is mixed with a powder of solid (B) no reaction occurs. But if the mixture is ignited and lighted using magnesium ribbon a reaction occurs with evolution of large amount of heat forming product (C) which settles down as liquid metal and the solid product (D) formed floats on the liquid (C). (C) in solid form reacts with moisture to form rust. The amount of heat generated during the reaction is so high that the reaction is used in welding of electric conductors, joints in railway tracks. Based on this information, answer any four questions The reaction in which heat is generated is called as:

    Read the following and answer any four questions When a silvery grey powder of a solid (A) is mixed with a powder of solid (B) no reaction occurs. But if the mixture is ignited and lighted using magnesium ribbon a reaction occurs with evolution of large amount of heat forming product (C) which settles down as liquid metal and the solid product (D) formed floats on the liquid (C). (C) in solid form reacts with moisture to form rust. The amount of heat generated during the reaction is so high that the reaction is used in welding of electric conductors, joints in railway tracks. Based on this information, answer any four questions Which of the following is amphoteric in nature ?

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