Which hormone is responsible for regulating the basal metabolic rate (BMR) in the human body?

1. Insulin
2. Thyroxine (T4)
3. Adrenaline
4. Cortisol

Question 2:

Which of the following conclusions was drawn from the Avery-MacLeod-McCarty experiment related to bacterial DNA?

1. Proteins are the genetic material in bacteria.
2. RNA is the genetic material in bacteria.
3. DNA is the genetic material in bacteria.
4. Lipids are the genetic material in bacteria.

Question 3:

What conclusion was derived from the Hershey-Chase experiment involving bacteriophages?

1. Proteins are the genetic material in bacteriophages.
2. RNA is the genetic material in bacteriophages.
3. DNA is the genetic material in bacteriophages.
4. Lipids are the genetic material in bacteriophages.

Question 4:

What is the correct sequence of ecological succession in a terrestrial ecosystem?

1. Pioneer species → Intermediate species → Climax community
2. Intermediate species → Pioneer species → Climax community
3. Climax community → Pioneer species → Intermediate species
4. Pioneer species → Climax community → Intermediate species

Question 5:

Which of the following is true about the pulmonary artery in the human circulatory system?

1. It carries oxygenated blood to the heart.
2. It carries deoxygenated blood to the lungs.
3. It carries oxygenated blood to the body.
4. It carries deoxygenated blood to the heart.

Question 6:

What type of monosaccharides are fructose, glucose, and xylose? To which family do they belong based on their functional groups?

1. Fructose is a ketose, glucose and xylose are aldoses.
2. Fructose and glucose are ketoses, xylose is an aldose.
3. All three are aldoses.
4. All three are ketoses.

Question 7:

Which of the following statements correctly differentiates reproduction in higher plants from lower plants?

1. Higher plants reproduce only sexually, while lower plants reproduce only asexually.
2. Lower plants reproduce through spores, while higher plants reproduce through seeds.
3. Higher plants reproduce through fragmentation, while lower plants reproduce sexually.
4. There is no difference in the reproduction of higher and lower plants.

Question 8:

A metallic sphere of radius R is charged to a potential V. The magnitude of the electric field at a distance r (r > R) from the center of the sphere is:

1. VR/r
2. VR²/r²
3. VR²/r
4. VR/r²

Question 9:

The coefficient of performance of a refrigerator is 5. If the temperature inside the freezer is -20°C, what is the temperature of the surroundings to which it rejects heat?

1. 31°C
2. 37°C
3. 41°C
4. 47°C

Question 10:

What is the output of a NAND gate when both inputs are HIGH?

1. HIGH
2. LOW
3. Alternates between HIGH and LOW
4. Indeterminate

Question 11:

What is the expression for the time period of a satellite orbiting Earth at a height h above the Earth's surface?

1. T = 2π√(R³/GM)
2. T = 2π√((R+h)³/GM)
3. T = (1/2π)√((R+h)³/GM)
4. T = 2π√((R²+h²)/GM)

Question 12:

In a meter bridge experiment, a resistance of 10Ω is balanced by a resistance X with a balance point at 40 cm. What is the value of X?

1. 6.67 Ω
2. 8.00 Ω
3. 10.00 Ω
4. 15.00 Ω

Question 13:

Two charges q1 = 2 μC and q2 = -3 μC are placed 10 cm apart in a vacuum. What is the magnitude and direction of the force between them?

1. 5.4 N, Attractive
2. 5.4 N, Repulsive
3. 4.8 N, Attractive
4. 4.8 N, Repulsive

Question 14:

Which elements have the same magnetic moment μ?

1. Cr³⁺, Mn²⁺
2. Fe²⁺, Ni²⁺
3. Cu²⁺, Zn²⁺
4. Mn²⁺, Fe³⁺

Question 15:

For irreversible expansion of an ideal gas under isothermal conditions, which of the following is correct?

1. ∆U > 0, q > 0
2. ∆U = 0, q = -w
3. ∆U = 0, q = w
4. ∆U < 0, q < 0

Question 16:

The atomic radius of silver (Ag) is closest to which of the following values?

1. 144 pm
2. 172 pm
3. 160 pm
4. 128 pm

Question 17:

The IUPAC name of the complex ion formed when gold dissolves in aqua regia is:

1. Tetrachloroaurate (I)
2. Dichloridoaurate (III)
3. Tetrachloridoaurate (III)
4. Tetrachloroaurate (II)

Question 18:

Which of the following represents the Gattermann-Koch reaction?

1. Introduction of a formyl group (-CHO) to an aromatic compound using CO and HCl in the presence of a catalyst.
2. Reduction of a nitro group to an amine group.
3. Introduction of an acyl group (-COCH3) to an aromatic ring.
4. Halogenation of an aromatic compound in the presence of a Lewis acid.

Question 19:

The metal that cannot be obtained by electrolysis of an aqueous solution of its salts is:

1. Ag
2. Ca
3. Cu
4. Cr

Question 20:

An example of a sigma-bonded organometallic compound is:

1. Cobaltocene
2. Ruthenocene
3. Ferrocene
4. Grignard's reagent

Question 21:

The reagent used in the Etard reaction is:

1. Chromyl chloride (CrO₂Cl₂)
2. Potassium dichromate (K₂Cr₂O₇)
3. Chromic acid (H₂CrO₄)
4. Sodium dichromate (Na₂Cr₂O₇)

Question 22:

Which of the following is not a neutral ligand?

1. H₂O
2. NH₃
3. ONO
4. CO

Question 23:

Which of the following is the Reimer-Tiemann reaction?

1. Formylation of phenols using chloroform and alkali to form ortho-hydroxybenzaldehyde.
2. Bromination of phenols in the presence of bromine water.
3. Oxidation of phenols to quinones using an oxidizing agent.
4. Nitration of phenols in the presence of concentrated nitric acid.

MHT CET Previous Year Question Papers

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