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NEET Practice Test - 13 - NEET MCQ


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30 Questions MCQ Test - NEET Practice Test - 13

NEET Practice Test - 13 for NEET 2024 is part of NEET preparation. The NEET Practice Test - 13 questions and answers have been prepared according to the NEET exam syllabus.The NEET Practice Test - 13 MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for NEET Practice Test - 13 below.
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NEET Practice Test - 13 - Question 1
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Methanol is industrially prepared by

Detailed Solution for NEET Practice Test - 13 - Question 1
Methanol is prepared commercially from water gas which is a mixture of carbon monoxide and hydrogen. In this method, water gas is mixed with its half volume of hydrogen and is passed over a heated Cr2O3 - ZnO catalyst at 673 K under high pressure.

NEET Practice Test - 13 - Question 2
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Reaction of ethyl amine with alkaline chloroform leads to the formation of carbylamine reaction. This reaction involves the attack of an electrophile on ethyl amine, the electrophile is

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NEET Practice Test - 13 - Question 3
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The orbital angular momentum of 3p electron is:

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Orbital angular momentum

for p-orbital.

NEET Practice Test - 13 - Question 4
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Pepsin enzyme hydrolyses
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The enzyme pepsin hydrolysis proteins into amino acids.
NEET Practice Test - 13 - Question 5
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Lassaigne’s test for the detection of nitrogen fails in
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Hydrazine (NH2NH2) does not con tain carbon and hence on fusion with Na metal, it cannot form NaCN; consequently hydrazine does not show Lassaigne’s test for nitrogen.
NEET Practice Test - 13 - Question 6
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Although CN– ion and N2 molecule are isoelectronic, yet N2 molecule is chemically inert because of
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In nitrogen molecules, both the nitrogen atoms have the same electronegativity. So it has zero polarity and hence less tendency to break away and form ions.
NEET Practice Test - 13 - Question 7
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For reaction A → B, the rate constant and for the reaction X → Y, the rate constant k2 = A2 (e-Ea2/RT). If A1 = 109, A2 = 1010 and Ea1 = 1200 cal/mol and Ea 2 = 1800 cal/mol, then the temperature at which k1 = k2 is : (Given; R = 2 cal/Kmol)
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NEET Practice Test - 13 - Question 8
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End of detergents have
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A detergent molecule consists of a large hydrocarbon group that is non-ionic and a sulphonate (SO3–Na+) or a sulphate (SO4–Na+) group that is ionic. Examples of detergents are sodium-n-dodecyl benzene sulphonate, sodium dodecyl sulphate etc.
NEET Practice Test - 13 - Question 9
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A square planar complex is formed by hybridisation of which atomic orbitals?
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A square planar complex is formed by hybridisation of s, px, py and dx2 - y2 atomic orbitals.
NEET Practice Test - 13 - Question 10
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The correct order of atomic radii is:
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Atomic radii follows the order

NEET Practice Test - 13 - Question 11
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Given that the standard potentials (E0) of Cu2 + /Cu and Cu+/Cu are 0.34 V and 0.522 V respectively, the E0 of Cu2 +/Cu + is:
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NEET Practice Test - 13 - Question 12
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Match the columns
NEET Practice Test - 13 - Question 13
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Aryl fluoride may be prepared from arene diazonium chloride using :
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NEET Practice Test - 13 - Question 14
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Toluene on treatment with CrO3 and (CH3CO)2O followed by hydrolysis with dil.HCl gives
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NEET Practice Test - 13 - Question 15
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Match the columns
Detailed Solution for NEET Practice Test - 13 - Question 15
HClO4 is a strong acid

HNO2 is a weak acid.

NH2– is a very good proton acceptor and thus, it is a base.

H2SO4 is a strong acid hence its conjugate base (HSO4–)will be a weak base.

NEET Practice Test - 13 - Question 16
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Consider the equation Z = PV/RT. Which of the following statements is correct?
Detailed Solution for NEET Practice Test - 13 - Question 16
Z > 1 real gas shows positive deviation from ideal behaviour and is difficult to compress.

Z < 1 real gas shows negative deviation from ideal behaviour.

NEET Practice Test - 13 - Question 17
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Malachite has the formula Cu2CO3(OH)2. What percentage by mass of malachite is copper?
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Percentage by mass of copper in malachite

NEET Practice Test - 13 - Question 18
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Which one of the following oxides of chlorine is obtained by passing dry chlorine over silver chlorate at 90 °C?
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NEET Practice Test - 13 - Question 19
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Which of the following is currently used as a tyre cord?
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Nylon tyre cord is made from high tenacity continuous filament yarn by twisting and plying.
NEET Practice Test - 13 - Question 20
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Which of the following has maximum lattice energy?
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MgO, Mg2+ ion is smallest in size and double the charge in comparison to Li+ and Na+ ions.
NEET Practice Test - 13 - Question 21
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A metal crystallises in the bcc lattice. The percent fraction of edge length not covered by atom is
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For bcc, r = √3/4 a

Edge length not covered by atom = a – 2r

∴ % of fraction not covered

NEET Practice Test - 13 - Question 22
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Freezing point of a 4% aqueous solution of X is equal to the freezing point of the 12% aqueous solution of Y. If molecular weight of X is A, then molecular weight of Y is:
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NEET Practice Test - 13 - Question 23
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Point out the false statement
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Colloid of liquid in liquid is called emulsion. Colloid of liquid in solid is gel.
NEET Practice Test - 13 - Question 24
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What is the melting point of benzene if ΔH fus = 9.95 kJ/mol and ΔS fus = 35.7 J/K mol?
Detailed Solution for NEET Practice Test - 13 - Question 24
At Melting Point

NEET Practice Test - 13 - Question 25
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Which of the following compounds cannot be used in preparation of iodoform?
Detailed Solution for NEET Practice Test - 13 - Question 25
Formaldehyde cannot produce iodoform, since only those compounds which contain either

On reaction with potassium iodide and sodium hypochlorite yield iodoform.

NEET Practice Test - 13 - Question 26
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Which of the following molecules is paramagnetic?
Detailed Solution for NEET Practice Test - 13 - Question 26
Oxygen is paramagnetic due to the presence of two unpaired electrons.

NEET Practice Test - 13 - Question 27
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The rate constants k1 and k2 for two different reactions are 1016. e–2000/T and 1015. e–1000/T, respectively. The temperature at which k1 = k2 is:
Detailed Solution for NEET Practice Test - 13 - Question 27
Given,

NEET Practice Test - 13 - Question 28
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During nitration of benzene with nitrating mixture, HNO3 acts as
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HNO3 accepts a proton from H2SO4.
NEET Practice Test - 13 - Question 29
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The root mean square velocity of a gas is doubled when the temperature is :
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∴ T' = 4 T

∴ When rms velocity is doubled, the temperature increases four times.

NEET Practice Test - 13 - Question 30
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Of the interhalogen AX3 compounds, ClF3 is most reactive but BrF3 has higher conductance in liquid state. This is because
Detailed Solution for NEET Practice Test - 13 - Question 30
In liquid state BrF3 dissociates into BrF2+ and BrF4– ions most easily..
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