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Identify the correct statements from th...

Identify the correct statements from the following:
(1) `CO_(2)(g)` is used as refrigerant for ice-cream and frozen food.
(2) The structure of `C_(60)` contains twelve six carbon rings and twenty five carbon rings.
(3) ZSM-5, a type of zeolite, is used to convert alcohols into gasoline.
(4) CO is colorless and odourless gas.

A

(1) and (3) only

B

(2) and (3) only

C

(3) and (4) only

D

(1), (2) and (3) only

Text Solution

Verified by Experts

The correct Answer is:
C
(1) Dry ice, `CO_(2)(s)`, is used as refrigerant
(2) `C_(60)` contains 20 six membered rings, 12 five membered rings
Statement 3 and 4 are correct.
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Identify the correct statements from the following : a) CO_2(g) is used as refrigerant for ice-cream and frozen food. b) The structure of C_(60) contains twelve six carbon rings and twenty five carbon rings. c) ZSM-5, a type of zeolite, is used to convert alcohols into gasoline. d) CO is colorless and odourless gas.

How many of the following statements are correct regarding allotropes of carbon: (a) Graphite is not a good conductor of electicity in perpendicular direction of layers at ordinary temperatures. (b) Coke is the impure form of carbon. ( c) Anthracite is the purest form of carbon. (d) Buckminister fullerence contains 12 five membered rings and 20 six-membered rings. (e) Diamond is a good conductor of heat. (f) Graphite is diamagnetic in nature. (g) Graphite is thermodynamically more stable than diamond

Knowledge Check

  • Identify the correct statements from the following : (A) CO_(2(g)) is used as refrigerant for ice-cream and frozen food. (B) The structure of C_(60) contains twelve six carbon rings and twenty five carbon rings. (C) ZSM-5, a type of zeolite, is used to convert alcohols into gasoline. (D) CO is colourless and odourless gas.

    A
    (A), (B) and (C) only
    B
    (A) and (C) only
    C
    (B) and (C) only
    D
    (C) and (D) only

  • Which of the following statements about HCO_(3)^(-) are correct ? 1. It is a Bronsted acid 2. It can ionize in water to form CO_(3)^(2-) (aq) 3. It does not exist in aqueous solution 4. It is a Bronsted base. Select the correct answer using the codes given below

    A
    `1, 2 and 3`
    B
    `2, 3 and 4`
    C
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    D
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  • Allotropes of carbon: There are three forms of carbon. i.e., diamond, graphite and fullerene which exxist in crystalline form. Graphite and diamond occur in nature. The structure of diamond is tetrahedral with sp^(3) hybridisation and diamond exist in 3-D netowrk solid. in graphite, carbon is sp^(2) hybridised. each carbon linked to other carbon linked to other carbon atom forms hexagonal ring. it has a layered structure. diamond and graphite are purest form of carbon. Fullerene constitute a new family of carbon allotropes. Consisting of large spheroidal molecule of compound with general formula C_(2n) . common fullerene C_(6),C_(70) , contain 5 and 6 membered rings. Q. Which of the following statement is correct regarding C_(60) fullerene?

    A
    It contains 20, six membered ring and 12, five membered rings
    B
    It contains 20, six membered ring and 12, five membered rings
    C
    It consist of 25, six membered and 12, five membered rings
    D
    It consists of 12, six membered and 25, five membered rings.

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