NEET Test 190

Result

NEET Test 190

Score
-
out of -
Rank
-
out of -

TIME Taken - -

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Weekly Quiz Competition

Question 1
4 / -1

Electrolysis of dilute aqueous NaCl solution was carried out by passing 10 milli ampere current. The time required to liberate 0.01 mol of H₂ gas at the cathode is: (1 Faraday = 96500Cmol⁻¹)

A
9.65 × 10⁴ sec

B
19.3 × 10⁴ sec

C
28.95 × 10⁴ sec

D
38.6 × 10⁴ sec

Solution
Question 2
4 / -1

If a transformer of an audio amplifier has an input impedance of 8Ω and output impedance of 8 kΩ, the primary and secondary turns of this transformer connected between the output of the amplifier and to loudspeaker should have the ratio

A
1000 :1

B
100 : 1

C
1 : 32

D
32 : 1

Solution

If a transformer of an audio amplifier has an input impedance of 8Ω output impedance of 8 kΩ, the primary and secondary turns of this transformer connected between the output of the amplifier and to loudspeaker should have the ratio will be 1:32.
Question 3
4 / -1

Metal that cannot be extracted by reduction of its oxide by carbon is _____________:

A
Magnesium

B
Aluminium

C
Lead

D
Iron

Solution

Reactive metals, such as aluminium, are extracted by electrolysis, while a less reactive metal, such as iron, may be extracted by reduction with carbon.
Question 4
4 / -1

According to VSEPR theory, the respective shapes of PCl₅ and ICl₅ should be

A
Trigonal bipyramidal and square pyramidal

B
Trigonal bipyramidal and trigonal bipyramidal

C
Square planar and square planar

D
Square planar and trigonal bipyramidal

Solution

The molecular geometry of PCl₅ is trigonal bipyramid with symmetric electron region distribution around the central atom.

These are arranged in a trigonal bipyramidal shape with a 175° F(axial)-Cl-F(axial) bond angle. The two lone pairs take equatorial positions because they demand more space than the bonds. The result is a T-shaped molecule.
Question 5
4 / -1

Which of the following waves can be transmitted through solids, liquids, and gases?

A
Transverse waves

B
Electromagnetic waves

C
Mechanical waves

D
Longitudinal waves

Solution

Longitudinal waves involve changes in the volume and density of the medium. Since all media can sustain compressive stress, longitudinal waves can be transmitted through all three types of media.
Question 6
4 / -1

Which of the following does not have coordinate bonds?

A

B
O₃

C

D
C₀

Solution
Question 7
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 8
4 / -1

Which of the following is not the function of auxins?

A
Cell elongation

B
Fruit ripening

C
Cell division

D
Inhibit the root growth

Solution

Auxins help to initiate rooting in stem cuttings, an application widely used for plant propagation. Auxins promote flowering e.g. in pineapples. They help to prevent fruit and leaf drop at early stages but promote the abscission of older mature leaves and fruits. In most higher plants, the growing apical bud inhibits the growth of the lateral (axillary) buds, a phenomenon called apical dominance. Auxins also induce parthenocarpy, e.g., in tomatoes. They are widely used as herbicides. 2, 4-D, widely used to kill dicotyledonous weeds, does not affect mature monocotyledonous plants. It is used to prepare weed-free lawns by gardeners. Auxin also controls xylem differentiation and helps in cell division.

Ethylene is responsible for the ripening of fruits.
Question 9
4 / -1

Which of the following statements is INCORRECT regarding biological membrane?

A
It is composed of lipids and proteins

B
Peripheral proteins are loosely associated with the membrane

C
Integral proteins span the lipid bilayer

D
Lipids and membrane protein do not provide structural and functional asymmetry
Solution
"Lipids and membrane protein do not provide structural and functional asymmetry" is INCORRECT regarding biological membrane.
- All cells are surrounded by a plasma membrane. The membrane is composed of a phospholipid bilayer arranged back-to-back.
- Plasma membrane consists of lipids, proteins and carbohydrates.
- Proteins in plasma membrane can be classified into integral and peripheral.
- Peripheral proteins lie on the surface of the membrane while the integral proteins are partially or totally buried in the membrane.
- Tunnel proteins are the integral proteins that run throughout the lipid bilayer and these cannot be easily removed.
- Proteins provide symmetry to plasma membrane.
Question 10
4 / -1

In the figure, the final value of current in 10Ω resistor, when the plug of key K is inserted:

A

B

C

D
Zero

Solution