NEET Test 147

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NEET Test 147

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Weekly Quiz Competition

Question 1
4 / -1

Which of the following process (C₄ cycle) occurs in bundle sheath cells?

A
Regeneration

B
Fixation

C
Carboxylation

D
Decarboxylation

Solution

In C₄ plants, the photosynthesis takes place in a chloroplast of a thin-walled mesophyll cell and a 4-carbon acid is handed off to a thick-walled bundle sheath cell where the Calvin cycle occurs.

Decarboxylation is a chemical reaction that removes a carboxyl group and releases carbon dioxide (CO₂). Usually, decarboxylation refers to a reaction of carboxylic acids, removing a carbon atom from a carbon chain.
Question 2
4 / -1

If a electrode is diluted 100 times, then the emf will show:

A
An increase of 59 mV

B
A decrease of 59 mV

C
An increase of 29.5 mV

D
A decrease of 29.5 mV

Solution
Question 3
4 / -1

Alkali halids do not show Frenkel defect because:

A
Cations and anions have almost equal size

B
There is a large difference in size of cations and anions

C
Cations and anions have a low coordination number

D
Anions cannot be accommodated in voids

Solution

Frenkel defect is possible in the compounds in which the size of cations and anions are different. In this defect, the smaller ion comes to an interstitial place. In Alkali halides the size of cations and anions is almost equal. So the ion size is large and they cannot get into the interstitial site. So, these kinds of compounds do not show Frenkel defect.
Question 4
4 / -1

Which of the following displaces Br₂ from an aqueous solution containing bromide ions?

A

B

C

D

Solution

Since chlorine is more electronegative than bromine, therefore it will displace bromine from an aqueous solution containing bromide ions.
Question 5
4 / -1

A particle moves from position due to a uniform force of (4i + j + 3k) N. If the displacement is in meters, then work done will be

A
100 J

B
65 J

C
79 J

D
85 J

Solution
Question 6
4 / -1

A

B

C

D

Solution
Question 7
4 / -1

The negative part of the addendum (the molecule to be added) adds the carbon atom of the double bond containing the least number of hydrogen atoms. This rule is known as:

A
Saytzeffs rule

B
Peroxide rule

C
Markovnikov’s rule

D
Van’t hoff rule

Solution

According to the Markovnikovs rule, the negative part of the unsymmetrical reagent adds to less hydrogenated ( more substituted) carbon atom of the double bond. So here the negative part of the addendum gets attach to that carbon which possesses a lesser number of hydrogen atoms.
Question 8
4 / -1

A satellite of mass m is placed at a distance r from the centre of Earth (mass M). The mechanical energy of the satellite is

A

B

C

D

Solution
Question 9
4 / -1

The traditional inclusion and multiplication of genes along with the desired genes involves:

A
The hybridization procedures in plant and animal breeding.

B
The hybridization procedures applied only in bacteria.

C
The hybridization procedures only in plant breeding.

D
The hybridization procedures in animal breeding.

Solution

Traditional hybridization procedures used in plant and animal breeding, very often lead to the inclusion and multiplication of undesirable genes along with the desired genes.
Question 10
4 / -1

A ray of light passes through four transparent media with refractive indices as shown in the figure below. The surfaces of all media are parallel. If the emergent ray CD is parallel to the incident ray AB, we must have:

A

B

C

D

Solution