Monthly Mock Test (February 29) - NEET MCQ

# Monthly Mock Test (February 29) - NEET MCQ

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## 30 Questions MCQ Test Daily Test for NEET Preparation - Monthly Mock Test (February 29)

Monthly Mock Test (February 29) for NEET 2024 is part of Daily Test for NEET Preparation preparation. The Monthly Mock Test (February 29) questions and answers have been prepared according to the NEET exam syllabus.The Monthly Mock Test (February 29) MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Monthly Mock Test (February 29) below.
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Monthly Mock Test (February 29) - Question 1

### A voltage of peak value 283 V varying frequency is applied to a series L-C-R combination in which R = 3W; L = 25 mH and C = 400 mF. Then, the frequency (in Hz) of the source at which maximum power is dissipated in the above, is

Detailed Solution for Monthly Mock Test (February 29) - Question 1

Here, V0​=283V,R=3Ω,L=25×10−3H
C=400μF=4×10−4F
Maximum power is dissipated at resonance, for which

ν=1/[2π√(LC)]​​= (1×7​)/[2×22(25×10−3×4×10−4)]
=(7×103​)/(44√10​)
=50.3Hz

Monthly Mock Test (February 29) - Question 2

### What is the correct order of equilibrium enol content of the following compounds? I. CH3COCH3 II. CH3COCH2COOC2H5 III. CH3COCH2COCH3 IV. CH3COCH2COH

Detailed Solution for Monthly Mock Test (February 29) - Question 2

A 1,3-diketo compound forms more stable enol than a monocarbonyls. Also ester group forms less stable enol than carbonyls. Hence, III, a 1 , 3-diketo ne form s highest enol content while I (monocarbonyl) forms least enol content at equilibrium.

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Monthly Mock Test (February 29) - Question 3

### Gene used to treat emphysema is

Detailed Solution for Monthly Mock Test (February 29) - Question 3

Alpha-1-antitrysin gene is used to treat emphysema disease. This disease causes breakdown of alveoli cell and reducing the surface area for exchange of gases.

Monthly Mock Test (February 29) - Question 4

The potential difference V and current i flowing through an a.c. circuit are given by V = 5 cos wt volt, i = 2 sin wt amp. the power dissipated in the circuit.

Detailed Solution for Monthly Mock Test (February 29) - Question 4

The voltage can be written as,
V=5[sinωt+(π/2​)]
The angle between the voltage and the current is 90∘.
The power dissipated in the circuit is given as,
P=Vrms​Irms​cosϕ
=Vrms​Irms​cos90o
=0
Thus, the power dissipated in the circuit is 0.

Monthly Mock Test (February 29) - Question 5

When 100 V DC is applied across a solenoid a current of 1A flows in it. When 100 V AC is applied across the same coil, the current drops to 0.5 A. If the frequency of the AC source is 50 Hz, the impedance and inductance of the solenoid are :

Detailed Solution for Monthly Mock Test (February 29) - Question 5

Impedance= Vac/Iac​ ​​=100V/0.5A ​=200Ω
R= Vdc​​/Idc ​ =100/1​=100Ω
Lω =√ (impedance2−R2​)=√(2002−1002​)=173.2
L=173.2/ ω​= 173.2/2π50​=0.55H

Monthly Mock Test (February 29) - Question 6

Detailed Solution for Monthly Mock Test (February 29) - Question 6

Explanation:The induced electromotive force in any closed circuit is equal to the negative of the time rate of change of the magnetic flux enclosed by the circuit.

Monthly Mock Test (February 29) - Question 7

The two polypeptide chains in insulin are linked via Sulphur. The bond formed is

Detailed Solution for Monthly Mock Test (February 29) - Question 7

Two peptide chains A and B in insulin are linked via sulphur to form a disulphide linkage or disulphide bridge.

Monthly Mock Test (February 29) - Question 8

The cry1Ac gene in Bt Brinjal is under the transcriptional control of an enhanced cauliflower mosaic virus 35S (CaMV35S) promoter, which ensures

Detailed Solution for Monthly Mock Test (February 29) - Question 8

The cry1Ac gene in Bt Brinjal is under the transcriptional control of an enhanced cauliflower mosaic virus 35S (CaMV35S) promoter, which ensures the gene is expressed in all the Brinjal tissue throughout its complete life-cycle.

Monthly Mock Test (February 29) - Question 9

For which of the following equilibrium, K< 1 ?

Detailed Solution for Monthly Mock Test (February 29) - Question 9

In the absence of any special stability factor, a hydrate of ketone is highly unstable.

Monthly Mock Test (February 29) - Question 10

Seeds of golden rice are yellow in colour because

Detailed Solution for Monthly Mock Test (February 29) - Question 10

The seeds of golden rice are yellow in colour due to presence of provitamin A in entire gene. This rice is natural source of vitamin A along with starch and proteins.

Monthly Mock Test (February 29) - Question 11

Which form s most stable acetal in the given condition?

Detailed Solution for Monthly Mock Test (February 29) - Question 11

Monthly Mock Test (February 29) - Question 12

A metallic rod of 1 m length is rotated with a frequency of 50 rev/s about an axis passing through the centre point O. Other end of the metallic rod slides on a Metallic ring . A constant and uniform magnetic field of 2 T parallel to the axis is present everywhere. What is the emf between the centre and the metallic ring?

Detailed Solution for Monthly Mock Test (February 29) - Question 12

l = 1 m

= 314V

Monthly Mock Test (February 29) - Question 13

Cry genes introduced in a plant will not be affective against

Detailed Solution for Monthly Mock Test (February 29) - Question 13

Cry gene produce toxin protein that chocks the gut of insects in presence of alkaline pH to cause death of insects. It is not effective against rodents.

Monthly Mock Test (February 29) - Question 14

What is the major product in the following reaction?

Detailed Solution for Monthly Mock Test (February 29) - Question 14

Acetal is form ed by cyclisation

Monthly Mock Test (February 29) - Question 15

An ac generator consists of 8 turns of wire, each of area A=0.0900m2 , and the total resistance of the wire is 12.0Ω. The loop rotates in a 0.500-T magnetic field at a constant frequency of 60.0 Hz. Maximum induced emf is

Detailed Solution for Monthly Mock Test (February 29) - Question 15

e = NBAω = NBA2πn = 8 x 0.5 x 0.09 x 2 x 3.14 x 60 = 136V

Monthly Mock Test (February 29) - Question 16

Cry toxin is released from the crystal in the insect gut as

Detailed Solution for Monthly Mock Test (February 29) - Question 16

Cry gene produce protein crystals in the insects gut as alkaline medium renders it insoluble and the activated toxin binds to surface of midgut epithelial cells and creates pores that cause cell swelling and death of the insect.

Monthly Mock Test (February 29) - Question 17

In the circuit shown if the emf of source at an instant is 5V, the potential difference across capacitor at the same instant is 4V. The potential difference across R at that instant may be

Detailed Solution for Monthly Mock Test (February 29) - Question 17

Monthly Mock Test (February 29) - Question 18

Assertion: Bacillus thuringiensis forms protein crystals during particular phase of growth.Reason: These crystals contain a toxic insecticidal protein that kills the certain insects.

Detailed Solution for Monthly Mock Test (February 29) - Question 18

Bacillus thuringiensis bacterium forms protein crystals during particular phase of growth. The crystal of toxic protein has insecticidal protein. This protein get activated in alkaline medium in the gut of insects and kills them.

Monthly Mock Test (February 29) - Question 19

GM Arabidopsis produces dsRNA to

Detailed Solution for Monthly Mock Test (February 29) - Question 19

Genetically modified (GM) Arabidopsis produces double stranded RNA to knock out specific parasitic genes in the nematode that harms the crops by silencing specific mRNA of nematodes.

Monthly Mock Test (February 29) - Question 20

Which of the following observation does not establish the existence of keto-enol tautomerism in acetone?

Detailed Solution for Monthly Mock Test (February 29) - Question 20

The above exchange occur due to existence of hydrate equilibrium.

Monthly Mock Test (February 29) - Question 21

A person born with hereditary disease can be treated by

Detailed Solution for Monthly Mock Test (February 29) - Question 21

Hereditary diseases are due to defects in gene. Gene can be corrected at embryonic stage by gene therapy technique in which genes are inserted into person cells or tissue to take over the function of defective gene.

Monthly Mock Test (February 29) - Question 22

Coils C1 and C2 are stationary. C1 connected in series with one very small diwali bulb while C2 is connected to a battery .If the connection is suddenly snapped

Detailed Solution for Monthly Mock Test (February 29) - Question 22

Explanation:Flux will be changed due to this current is induced momentarily

Monthly Mock Test (February 29) - Question 23

Agrobacterium naturally inserts DNA into plants by

Detailed Solution for Monthly Mock Test (February 29) - Question 23

Using Agrobacterium vectors, nematodes-specific genes were introduced into the host plant. Agrobacterium naturally inserts DNA into plants by its Ti plasmid.

Monthly Mock Test (February 29) - Question 24

Among the following compounds, one that will not show keto-enol tautomerism is

Detailed Solution for Monthly Mock Test (February 29) - Question 24

sp2 hybridisation is very less stable at bridgehead carbon of a bicyclic compound.

Monthly Mock Test (February 29) - Question 25

The main challenge for production of insulin using rDNA technique was

Detailed Solution for Monthly Mock Test (February 29) - Question 25

The main challenge for production of insulin using rDNA technique was getting insulin assembled into a mature form

Monthly Mock Test (February 29) - Question 26

Which of the following methods should be used to increase crop production without use of chemicals and fertilizers?

Detailed Solution for Monthly Mock Test (February 29) - Question 26

Use of genetically modified crops may increase crop production many times without use of chemicals and fertilizers. Gene coding form higher nutrient and resistance to disease can be incorporated in crop.

Monthly Mock Test (February 29) - Question 27

Biotechnology has advantages over conventional breeding as

Detailed Solution for Monthly Mock Test (February 29) - Question 27

Conventional breeding programme takes several years to develops a new variety of crop. By use of biotechnology, required gene can be directly inserted into host plant to get required result.

Monthly Mock Test (February 29) - Question 28

What is the term used to refer to the use of bio-resources by multinational companies and other organizations without proper authorization from the countries and people concerned without contemporary payment is?

Detailed Solution for Monthly Mock Test (February 29) - Question 28

The term used to refer to the use of bio-resources by multinational companies and other organizations without proper authorization from the countries and people concerned without contemporary payment is Bio-piracy. It happens when biological resources are taken or exploited without official sanction.

Monthly Mock Test (February 29) - Question 29

Flavr Savr tomato is produced______.

Detailed Solution for Monthly Mock Test (February 29) - Question 29

Flavr Savr tomato has thick fruit coat that enhance the self-life of the fruits and do not get spoiled soon. Common Indian tomato have thin coat and easily get destroyed during transportation and handling.

Monthly Mock Test (February 29) - Question 30

Arrange the following in the increasing order of acidic strength

I. H2CO
II. CH3CHO
III. C6H5CH2CHO

Detailed Solution for Monthly Mock Test (February 29) - Question 30

IV is most acidic as its conjugate base is resonance stabilised by two carbonyl groups, followed by III whose conjugate base is resonance stabilised by a carbonyl group and phenyi ring.

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