NEET Test 82

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NEET Test 82

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Weekly Quiz Competition

Question 1
4 / -1

Which of the following will not act as an antacid?

A
Sodium hydrogen carbonate

B
Magnesium hydroxide

C
Sodium carbonate

D
Aluminum carbonate

Solution

An antacid is a substance that neutralizes stomach acidity and is used to relieve heartburn, indigestion, or an upset stomach. Some antacids have been used in the treatment of constipation and diarrhea. Currently marketed antacids contain salts of aluminum, calcium, magnesium, or sodium.

Sodium carbonate is a chemical compound with the molecular formula Na₂CO₃. It's commonly referred to as washing soda and is used in cleaning products, glass production, as a food additive, and more.
Hence, the correct option is (C).
Question 2
4 / -1

RNA which carry amino acid from the cytoplasm to the ribosome is:

A
m-RNA

B
t-RNA

C
r-RNA

D
c-RNA

Solution

Ribosomes are very fine particles located in the cell fluid of a living cell, which have an important role in the synthesis of proteins. They convert signals from genetic material (DNA or RNA) into the protein chain. They are found on the upper surface of the endoplasmic reticulum, in addition to those found in mitochondria and chloroplasts. tRNA carries amino acid at its 3' end amino acid attachment site.

Hence, the correct option is (B).
Question 3
4 / -1

HIV mainly attacks

A
B-cells

B
Cytotoxic T-cells

C
Stem cells

D
Helper T-cells

Solution

HIV attacks a specific type of immune system cell in the body. It's known as the CD4 helper cell or T-cell. When HIV destroys this cell, it becomes harder for the body to fight off other infections. When HIV is left untreated, even a minor infection such as a cold can be much more severe.

Hence, the correct option is (D).
Question 4
4 / -1

A circular disc of radius 'R' has uniform thickness. A circular hole of diameter equal to the radius of the disc has been cut out as shown. The centre of gravity of the remaining part of the disc lies on the diameter of the disc at a distance to the left of the centre of the original disc, which is equal to:

A
R

B
R/2

C
R/4

D
R/6

Solution
Question 5
4 / -1

The type of isomerism shown by the complex [CoCl₂(en)₂] is:

A
Geometrical isomerism

B
Coordination isomerism

C
Linkage isomerism

D
Ionization isomerism

Solution

In the given complex, the CN of Co is 6, and the complex has octahedral geometry.

Hence, the correct option is (A).
Question 6
4 / -1

A proton, a deuteron, and an α -particle is projected perpendicular to the direction of a uniform magnetic field with the same kinetic energies. The ratio of the radii of the circular paths described by them is -

A
1 : √2 : 1

B
1 : √2 : √2

C
√2 : √2 : 1

D
√2 : 1 : 1

Solution

According to the question, the magnetic field is uniform and the kinetic energy for each particle is the same.

We know that,
Question 7
4 / -1

In which one of the following processes CO₂ is not released?

A
Aerobic respiration in plants

B
Aerobic respiration in animals

C
Alcoholic fermentation

D
Lactate fermentation

Solution

Aerobic respiration in plants and animals oxidizes the respiratory substrate and produces carbon dioxide and water along with ATP.

Anaerobic respiration is a type of respiration which takes place in the absence of oxygen. it is also known as fermentation.

Alcoholic fermentation is a type of anaerobic respiration in which the respiratory substrate is converted to carbon dioxide and alcohol along with the production of ATP.

Lactate fermentation is a type of anaerobic respiration in which the respiratory substrate is converted into lactate along with the production of ATP. It takes place in muscles during strenuous physical work.

Hence, the correct option is (D).
Question 8
4 / -1

A particle starts from the rest with a constant acceleration. At time ′t′ seconds, the velocity is found to be 200m/s and one second later, the velocity becomes 250m/s. Calculate the acceleration and the distance travelled during (t+1)^th second.

A
125m /s², 60m

B
120m /s², 60m

C
70m /s², 125m

D
50m /s², 225m

Solution
Question 9
4 / -1

(NH₄)₂Cr₂O₇ gives on heating a gas which is also given by:

A
NH₄NO₂

B
NH₄NO₃

C
Mg₃N₂ + HO₂

D
N a metal + HO₂

Solution
Question 10
4 / -1

A double-slit apparatus is immersed in a liquid of refractive index 1.33. It has slit separation of 1mm and distance between the plane of slits and the screen is 1.33m. The slits are illuminated by a parallel beam of light whose wavelength in air is 6300 What is the fringe width?

A
0.8379 mm

B
1.63 / 1.33 mm

C
0.63 / (1.33)² mm

D
0.63 mm

Solution