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NEET ChemistryGeneralMedium

Question

Which of the following is not correct about carbon monoxide?

1

It forms carboxyhaemoglobin

2

It reduces oxygen carrying ability of blood.

3

The carboxyhaemoglobin (haemoglobin bound to CO) is less stable than oxyhaemoglobin.

4

It is produced due to incomplete combustion.

Step-by-Step Solution

The carboxyhaemoglobin is about 300 times more stable than oxyhaemoglobin.

Exam Context & Concepts Covered

This question aligns with the NEET Chemistry syllabus, specifically targeting concepts from General. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.

Chemistryfollowingcorrectcarbonmonoxide

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An increase in the concentration of the reactants of a reaction leads to change in

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2.heat of reaction
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For the reaction, $2\text{Cl}(g) \rightarrow \text{Cl}_2(g)$, the correct option is :

1.$\Delta_r\text{H} > 0$ and $\Delta_r\text{S} > 0$
2.$\Delta_r\text{H} > 0$ and $\Delta_r\text{S} < 0$
3.$\Delta_r\text{H} < 0$ and $\Delta_r\text{S} > 0$
4.$\Delta_r\text{H} < 0$ and $\Delta_r\text{S} < 0$
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The freezing point depression constant ($K_f$) of benzene is 5.12 K kg $mol^{-1}$. The freezing point depression for the solution of molality 0.078 m containing a non-electrolyte solute in benzene is (rounded off upto two decimal places) :

A.0.20 K
B.0.80 K
C.0.40 K
D.0.60 K
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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.

1.(a), (b) and (c) only
2.(a) and (c) only
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Identify the incorrect statement.

1.$\text{Cr}^{2+} (d^4)$ is a stronger reducing agent than $\text{Fe}^{2+} (d^6)$ in water.
2.The transition metals and their compounds are known for their catalytic activity due to their ability to adopt multiple oxidation states and to form complexes.
3.Interstitial compounds are those that are formed when small atoms like H, C or N are trapped inside the crystal lattices of metals.
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HCl was passed through a solution of $CaCl_2$, $MgCl_2$ and $NaCl$. compound(s) crystallise(s)?

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3.Only $MgCl_2$
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A tertiary butyl carbocation is more stable than a secondary butyl carbocation because of ?

1.$-I$ effect of $-CH_3$ groups
2.$+R$ effect of $-CH_3$ groups
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4.Hyperconjugation
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Hydrolysis of sucrose is given by the following reaction. Sucrose + $H_2O \rightleftharpoons$ Glucose + Fructose. If the equilibrium constant ($K_c$) is $2 \times 10^{13}$ at 300 K, the value of $\Delta_r G^{\ominus}$ at the same temperature will be :

1.$-8.314 \text{ J mol}^{-1} \text{K}^{-1} \times 300 \text{ K} \times \ln(2 \times 10^{13})$
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