NEET Test 179

Result

NEET Test 179

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Weekly Quiz Competition

Question 1
4 / -1

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

A
I₂

B

C
Cl₂

D
Cl⁻

Solution

Since chlorine is more electronegative than bromine, therefore it will displace bromine from an aqueous solution containing bromide ions.
Question 2
4 / -1

Find the correct order of arrangement of ear ossicles from the side of tympanum towards the oval window:

A
Incus → Stapes → Malleus

B
Stapes → Incus → Malleus

C
Malleus → Incus → Stapes

D
Malleus → Stapes → Incus

Solution

The three ear ossicles are found in the middle ear and are said to be the smallest bones in the human body. They serve the purpose of transmitting sound from the air to the cochlea. The vibrations received by the tympanic membrane travel through the ear ossicles, malleus, incus and stapes and then reach the cochlea via the oval window (opening from the middle ear to the cochlea) into the internal ear.
Question 3
4 / -1

The pair of atoms having the same number of neutrons is:

A

B

C

D

Solution

Number of neutons is the difference between atomic number and mass number (N = A − Z)

The pair of atoms having the same number of neutrons is Na,Mg

The number of neutrons present in sodium is 23 − 11 = 12

The number of neutrons present in Magnesium is 24 − 12 = 12
Question 4
4 / -1

Which one of the following is a vascular cryptogam?

A
Equisetum

B
Ginkgo

C
Marchantia

D
Cedrus

Solution

Equisetum is a vascular cryptogam.

Equisetum is the only living genus in equisetaceae, a family of ferns, which reproduce by spores rather than seeds. Equisetum is a "living fossil", the only living genus of the entire subclass equisetidae, which for over 100 million years was much more diverse and dominated the understorey of late Paleozoic forests.
Question 5
4 / -1

Select the option regarding the BOD (Biochemical Oxygen Demand) of sewage (S), distillery effluent (DE), paper mill effluent (PE) and sugar mill effluent (SE) that have been arranged in ascending order?

A
SE < PE < S < DE

B
S < PE < SE < DE

C
S < DE < PE < SE

D
SE < S < PE < DE

Solution

The more the value of BOD of the water sample the more will be the pollution by organic matter. BOD of distillery effluent will be approximately 40000 mg/L, sugar mill effluent BOD value will be around 3480 mg/L and that of paper mill effluent and sewage is 190 mg/L and 30 mg/L respectively.
Question 6
4 / -1

An organism having cytoplasm, DNA and RNA but no cell wall is:

A
Cyanobacterium

B
Mycoplasma

C
Bacterium

D
Virus

Solution

Mycoplasma (plural mycoplasmas or mycoplasmata) is a genus of bacteria that lack a cell wall around their cell membranes. This characteristic makes them naturally resistant to antibiotics that target cell wall synthesis (like the beta-lactam antibiotics). They can be parasitic or saprotrophic.
Question 7
4 / -1

Oxidative phosphorylation usually refers to________

A
Anaerobic production of ATP

B
Citric acid cycle production of ATP

C
Alcoholic fermentation

D
None of the above

Solution

The eight steps of the citric acid cycle are a series of redox, dehydration, hydration, and decarboxylation reactions. Each turn of the cycle forms one GTP or ATP as well as three NADH molecules and one FADH2 molecule, which will be used in further steps of cellular respiration to produce ATP for the cell.
Question 8
4 / -1

In which of the following compounds, nitrogen exhibits the highest oxidation state?

A
N₃H

B
NH₂OH

C
N₂H₄

D
NH₃

Solution

Oxidation states of Nitrogen in the following compounds:
Question 9
4 / -1

A short linear object of length b lies along the axis of a concave mirror of focal length f at a distance u from the pole of the mirror. The size of the image is approximately equal to:

A

B

C

D

Solution
Question 10
4 / -1

In a 3-stage air compressor, the inlet pressure is p₁, discharge pressure is p₄ and the intermediate pressure are p₂ and p₃ (p₂ < p₃). The total pressure ratio of the compressor is 10 and the pressure ratios of the stages are equal. If p₁= 100 kPa, the value of the pressure p₃ (in kPa.) is_____.

A
464.16

B
465.160

C
468.156

D
470.159

Solution

In series of compression the compression ratio will be constant. i.e.,