NEET Test 46

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NEET Test 46

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Weekly Quiz Competition

Question 1
4 / -1

Which of the following is propagated by using stem cuttings?

A
Banana

B
Mango

C
Cotton

D
Rose

Solution

Rose is propagated by using stem cuttings. The stem cuttings are placed in soil and covered with a jar or poly bag. The bright sunlight then helps the stem to grow and produce the flower.
Question 2
4 / -1

Vaginal cancer is caused by

A
Cadmium oxide

B
Diethylstibestrol

C
Afflatoxin

D
Vinyl chloride

Solution

Cancer is caused by physical, chemical and biological factors. These factors are called carcinogens. Some of the carcinogens and their target tissues are

Cadmium oxide – Prostate gland

Diethylstibestrol (DES) – Vagina

Afflatoxin – Liver

Vinyl chloride (VC) – Liver
Question 3
4 / -1

Which of the following options is not an application of Modern Biotechnology?

A
Production of humulin

B
Production of DNA vaccine

C
Gene therapy

D
Production of cheese and butter

Solution

Cheese and butter are not produced biotechnologically till date. Humulin and vaccines and gene therapy are important applications of modern biotechnology.
Question 4
4 / -1

How many microtubules are there in the periphery of centriole?

A
5

B
8

C
9

D
10

Solution

a centriole has 9+2 arrangement of microtubules, 9 at pheriphery and 2 at centre.
Question 5
4 / -1

Among the following secondary metabolites, which is polymeric?

A
Ricin

B
Monoterpenes

C
Curcumin

D
Rubber

Solution

Rubber is polymeric. Curcumin is obtained from turmeric and is not polymeric. Ricin is a poisonous substance obtained in castor plant products. Monoterpenes is also an organic secondary metabolite that is not polymeric.
Question 6
4 / -1

A fuse wire melts when applied 4 × 10^-6 W. If the current that is provided is 6.3 A and the wire melts. Then what will be the resistance of the fuse wire?

A
0.1 × 10^-7 Ω

B
1 × 10^-7 Ω

C
0.01 × 10^-7 Ω

D
0.0001 × 10^-7 Ω

Solution

Power = I²R
4 X 10^-6 = (6.3)(6.3)R
R = 1 X 10^-7 Ω
Question 7
4 / -1

While going for a tour for 5 days the family forgot to turn the refrigerator off. The refrigerator has supply of 220 V and 15 A current. Then what will be the power wasted?

A
3.3 W

B
1.67 W

C
3.3 kW

D
1.67 kW

Solution

Power = V X I

= 220 X 15

= 3.3 kW
Question 8
4 / -1

When a current is passed through a coil which is suspended in a uniform magnetic field in such a way that the plane of the coil is parallel to the magnetic lines of force then, the coil starts oscillating. An aluminium sheet is placed near the coil to stop the oscillation. These oscillations stop due to:

A
Electromagnetic induction in the aluminium sheet gives rise to electromagnetic damping.

B
Development of the air current when the sheet is placed.

C
Induction of electrical charge on the plate.

D
Shielding of magnetic lines of force as aluminium is a paramagnetic material.

Solution

According to Lenz’s law, electromagnetic induction takes place in the aluminium sheet due to which eddy current is developed which opposes the motions or vibrations of coil.

This causes the energy loss which results in electromagnetic damping of oscillatory motion of the coil.
Question 9
4 / -1

Position of non-polar and polar parts in Micelles:

A
polar at outer surface but non-polar at inner surface

B
polar at inner surface non-polar at outer surface

C
distributed over all the surface

D
are present in the surface only

Solution

During the cleansing action of soaps, micelles are formed. It constitutes 2 parts- polar head and non-polar tail. Polar head is in contact with polar solvent i.e. water which is present on the outer side whereas non-polar tail remains on the inner side or away from polar solvent.
Question 10
4 / -1

Statement I: All types of EM radiation travel with same velocity

Statement II: Velocity of EM radiation is equal to velocity of light

A
Both Statement 1 and Statement 2 are correct and Statement 2 is the correct explanation for Statement 1

B
Both Statement 1 and Statement 2 are correct but Statement 2 is not the correct explanation for Statement 1

C
Statement 1 is correct but Statement 2 is incorrect

D
Statement 1 is incorrect but Statement 2 is correct

Solution

All types of electromagnetic radiation travel with same velocity but with different wavelengths and hence in frequency and it travels with the speed of light.
Question 11
4 / -1

Which of the following statements is incorrect?

A
The phenomenon of Black body radiation can be explained on the basis of particle nature of light.

B
Photoelectric current is directly proportional to the intensity of light of same frequency.

C
Heisenberg, in 1924, proposed that matter should also exhibit dual behavior like radiation.

D
Matter waves require medium for their propagation.

Solution

In 1942, de Broglie proposed that matter should also exhibit dual behavior like radiation
Question 12
4 / -1

Salts of beryllium are easily hydrolyzed because they have

A
covalent character

B
ionic character

C
high melting point

D
none of these

Solution

Beryllium forms covalent compounds whereas other members form ionic compounds. Because of covalent character, salts of beryllium are easily hydrolysed.

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Re-Attempt Weekly Quiz Competition

NEET Test 46

Result

NEET Test 46

Score

-

Rank

-

SHARING IS CARING

Question 1

Banana

Mango

Cotton

Rose

Solution

Question 2

Cadmium oxide

Diethylstibestrol

Afflatoxin

Vinyl chloride

Solution

Question 3

Production of humulin

Production of DNA vaccine

Gene therapy

Production of cheese and butter

Solution

Question 4

5

8

9

10

Solution

Question 5

Ricin

Monoterpenes

Curcumin

Rubber

Solution

Question 6

0.1 × 10-7 Ω

1 × 10-7 Ω

0.01 × 10-7 Ω

0.0001 × 10-7 Ω

Solution

Question 7

3.3 W

1.67 W

3.3 kW

1.67 kW

Solution

Question 8

Electromagnetic induction in the aluminium sheet gives rise to electromagnetic damping.

Development of the air current when the sheet is placed.

Induction of electrical charge on the plate.

Shielding of magnetic lines of force as aluminium is a paramagnetic material.

Solution

Question 9

polar at outer surface but non-polar at inner surface

polar at inner surface non-polar at outer surface

distributed over all the surface

are present in the surface only

Solution

Question 10

Both Statement 1 and Statement 2 are correct and Statement 2 is the correct explanation for Statement 1

Both Statement 1 and Statement 2 are correct but Statement 2 is not the correct explanation for Statement 1

Statement 1 is correct but Statement 2 is incorrect

Statement 1 is incorrect but Statement 2 is correct

Solution

Question 11

The phenomenon of Black body radiation can be explained on the basis of particle nature of light.

Photoelectric current is directly proportional to the intensity of light of same frequency.

Heisenberg, in 1924, proposed that matter should also exhibit dual behavior like radiation.

Matter waves require medium for their propagation.

Solution

Question 12

covalent character

ionic character

high melting point

none of these

Solution

0.1 × 10^-7 Ω

1 × 10^-7 Ω

0.01 × 10^-7 Ω

0.0001 × 10^-7 Ω