NEET Test 159

Result

NEET Test 159

Score
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Rank
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Weekly Quiz Competition

Question 1
4 / -1

Which is the strongest acid in the following?

A
H₂SO₃

B
H₂SO₄

C
HClO₃

D
HClO₄

Solution

The strength of oxyacids can also be decided with the help of the oxidation number of the central atoms.

The higher the oxidation number of the central atom, the more acidic is the oxyacid.

Since, in HClO₄, oxidation number of Cl is highest, so, HClO₄ is the strongest acid among the given.
Question 2
4 / -1

What is called for organisms which get energy by eating dead organisms?

A
Decomposers

B
Producers

C
Consumers

D
Herbivores

Solution

Decomposers are organisms which get energy by eating dead organisms.

Decomposers are an organism that break down chemicals from wastes and dead organisms. In return, it gives important materials to the soil and water. This is the last stop of the food chain. Major decomposers in the ecosystem include bacteria and fungi.
Question 3
4 / -1

If a body is positively charged, then it has:

A
Excess of electrons

B
Excess of protons

C
Deficiency of electrons

D
Deficiency of neutrons

Solution

Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field. There are two types of electric charges: positive and negative. Positively charged substances are repelled from other positively charged substances, but attracted to negatively charged substances; negatively charged substances are repelled from negative and attracted to positive. An object is positively charged if it has a deficiency of electrons, and is otherwise negatively charged or uncharged.
Question 4
4 / -1

The descending order of acidity for the following carboxylic acid is -

Choose the correct answer from the options given below:

A

B

C

D

Solution

Acidity α stability of conjugate base

Stability order
Question 5
4 / -1

0.0833 mol of carbohydrate of empirical formula CH₂O contain 1 g of hydrogen. The molecular formula of the carbohydrate is:

A
C₅H₁₀O₅

B
C₃H₄O₃

C
C₁₂H₂₂O₁₁

D
C₆H₁₂O₆

Solution
Question 6
4 / -1

Two uniform metal rods of lengths l₁ and l₂, and linear coefficients of expansion α₁ and α₂, respectively are connected to form a single rod of length (l₁+l₂). When the temperature of this rod is raised by t^∘C, the length of each rod increases by the same amount. Then, is

A

B

C

D

Solution
Question 7
4 / -1

Which is not correctly matched?

A
Annelida → Enterocoelomate

B
Platyhelminthes → Acoelomate

C
Arthropoda → Schizocoelomate

D
Nemathelminthes → Pseudocoelomate

Solution

Annelida possess true coelom. Their coelom is schizocoelic in origin (i.e., it is formed by the splitting of embryonic mesoderm), thus they can also be called schizocoelomata. Phylum Echinodermata and Chordata have enterocoelom, where the coelom is formed by the splitting of endoderm.
Question 8
4 / -1

The figure below shows three identical springs A, B, and C. When a 4 kg mass is hung on A, it descends by 1cm. When a 6 kg mass is hung on C, it will descend by:

A
1.5 cm

B
3 cm

C
4.5 cm

D
6 cm

Solution
Question 9
4 / -1

A current of 0.75 A is passed through an acidic solution of CuSO₄ for 10 minutes. The volume of oxygen liberated at anode (at STP) will be:

A
26.11 mL

B
26.1 mL

C
39.15 mL

D
52.2 mL

Solution
Question 10
4 / -1

At t₁= 2.00 s, the acceleration of a particle in counter clockwise circular motion is It moves at constant speed. At time t₂=5.00 s, the particle's acceleration is . What is the radius of the path taken by the particle if t₂− t₁ is less than one period:

A
2.92 m

B
292 m

C
2.92 cm

D
292 cm

Solution