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NEET Practice Test - 13 - NEET MCQ


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30 Questions MCQ Test NEET Mock Test Series 2025 - NEET Practice Test - 13

NEET Practice Test - 13 for NEET 2024 is part of NEET Mock Test Series 2025 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.
Solutions of NEET Practice Test - 13 questions in English are available as part of our NEET Mock Test Series 2025 for NEET & NEET Practice Test - 13 solutions in Hindi for NEET Mock Test Series 2025 course. Download more important topics, notes, lectures and mock test series for NEET Exam by signing up for free. Attempt NEET Practice Test - 13 | 180 questions in 200 minutes | Mock test for NEET preparation | Free important questions MCQ to study NEET Mock Test Series 2025 for NEET Exam | Download free PDF with solutions
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:

Detailed Solution for NEET Practice Test - 13 - Question 3
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
Detailed Solution for NEET Practice Test - 13 - Question 6
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?
Detailed Solution for NEET Practice Test - 13 - Question 17
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?
Detailed Solution for NEET Practice Test - 13 - Question 19
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?
Detailed Solution for NEET Practice Test - 13 - Question 20
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
Detailed Solution for NEET Practice Test - 13 - Question 21
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
Detailed Solution for NEET Practice Test - 13 - Question 28
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 :
Detailed Solution for NEET Practice Test - 13 - Question 29

∴ 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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