MHT-CET
Q. What is the main type of reaction that haloalkanes undergo? (2020)
A.
Addition
B.
Substitution
C.
Elimination
D.
Redox
Show solution
Solution
Haloalkanes primarily undergo nucleophilic substitution reactions due to the presence of a good leaving group (halogen).
Correct Answer: B — Substitution
Learn More →
Q. What is the main use of citric acid?
A.
Preservative
B.
Flavoring agent
C.
Cleaning agent
D.
All of the above
Show solution
Solution
Citric acid is used as a preservative, flavoring agent, and cleaning agent.
Correct Answer: D — All of the above
Learn More →
Q. What is the major product when 2-bromobutane is treated with KOH in ethanol?
A.
But-1-ene
B.
But-2-ene
C.
Butane
D.
No reaction
Show solution
Solution
The major product is But-2-ene due to the more stable double bond formed during elimination.
Correct Answer: B — But-2-ene
Learn More →
Q. What is the mass of 3 moles of NaCl? (2020) 2020
A.
87 g
B.
58.5 g
C.
174 g
D.
3 g
Show solution
Solution
Molar mass of NaCl = 23 + 35.5 = 58.5 g/mol. Mass = moles x molar mass = 3 moles x 58.5 g/mol = 174 g.
Correct Answer: C — 174 g
Learn More →
Q. What is the mass of 3 moles of sodium chloride (NaCl)? (2023)
A.
58.5 g
B.
117 g
C.
175.5 g
D.
29.25 g
Show solution
Solution
The molar mass of NaCl is 58.5 g/mol. Therefore, 3 moles of NaCl weigh 3 x 58.5 g = 175.5 g.
Correct Answer: B — 117 g
Learn More →
Q. What is the mass of NaOH required to prepare 0.5 L of a 1 M solution? (2023)
A.
20 g
B.
40 g
C.
10 g
D.
30 g
Show solution
Solution
Molar mass of NaOH = 40 g/mol; grams = moles × molar mass = (1 mole/L × 0.5 L) × 40 g/mol = 20 g
Correct Answer: B — 40 g
Learn More →
Q. What is the mass of solute in grams in a 3 M solution of NaCl in 1 L of solution? (2023)
A.
58.44 g
B.
174.32 g
C.
29.22 g
D.
87.16 g
Show solution
Solution
Molar mass of NaCl = 58.44 g/mol; mass = moles × molar mass = 3 moles × 58.44 g/mol = 175.32 g
Correct Answer: B — 174.32 g
Learn More →
Q. What is the mass of solute in grams required to make 1 L of a 0.1 M solution of NaCl? (Molar mass of NaCl = 58.5 g/mol) (2021)
A.
5.85 g
B.
10 g
C.
1 g
D.
2 g
Show solution
Solution
Mass = moles × molar mass = (0.1 moles/L × 1 L) × 58.5 g/mol = 5.85 g.
Correct Answer: A — 5.85 g
Learn More →
Q. What is the mass of solute in grams required to make 1 L of a 0.5 M NaOH solution? (2021)
A.
20 g
B.
40 g
C.
10 g
D.
30 g
Show solution
Solution
Molar mass of NaOH = 40 g/mol. Mass = moles × molar mass = 0.5 moles × 40 g/mol = 20 g.
Correct Answer: B — 40 g
Learn More →
Q. What is the maximum area of a triangle with a base of 10 cm and height as a function of x? (2020)
Show solution
Solution
Area = 1/2 * base * height = 1/2 * 10 * x. Max area occurs when x = 10, giving Area = 50.
Correct Answer: B — 50
Learn More →
Q. What is the maximum number of electrons in the d subshell? (2022) 2022
Show solution
Solution
The d subshell can hold a maximum of 10 electrons.
Correct Answer: C — 10
Learn More →
Q. What is the maximum number of electrons in the f-subshell? (2022)
Show solution
Solution
The f-subshell can hold a maximum of 14 electrons.
Correct Answer: C — 14
Learn More →
Q. What is the maximum number of electrons that can occupy the n=3 shell? (2021) 2021
Show solution
Solution
The maximum number of electrons in a shell is given by the formula 2n². For n=3, it is 2(3)² = 18.
Correct Answer: C — 18
Learn More →
Q. What is the maximum number of electrons that can occupy the n=3 shell? (2022) 2022
Show solution
Solution
The maximum number of electrons in a shell is given by the formula 2n². For n=3, it is 2(3)² = 18.
Correct Answer: C — 18
Learn More →
Q. What is the maximum oxidation state of phosphorus in its compounds? (2021)
Show solution
Solution
Phosphorus can exhibit a maximum oxidation state of +5 in compounds like PCl5.
Correct Answer: B — +5
Learn More →
Q. What is the maximum profit if the profit function is P(x) = -x^2 + 10x - 16? (2021)
Show solution
Solution
The maximum profit occurs at x = -b/(2a) = 10/2 = 5. P(5) = -5^2 + 10*5 - 16 = 9.
Correct Answer: C — 8
Learn More →
Q. What is the maximum value of f(x) = -x^2 + 4x + 1? (2023)
Show solution
Solution
The vertex occurs at x = 2. f(2) = -2^2 + 4(2) + 1 = 5.
Correct Answer: A — 5
Learn More →
Q. What is the maximum value of f(x) = -x^2 + 6x - 8? (2023)
Show solution
Solution
The vertex occurs at x = 3. f(3) = -9 + 18 - 8 = 1.
Correct Answer: C — 6
Learn More →
Q. What is the minimum value of f(x) = 3x^2 - 12x + 9? (2022)
Show solution
Solution
The vertex occurs at x = 2. f(2) = 3(2^2) - 12(2) + 9 = 0.
Correct Answer: B — 1
Learn More →
Q. What is the minimum value of f(x) = x^2 - 4x + 5? (2020)
Show solution
Solution
The vertex form gives the minimum at x = 2. f(2) = 2.
Correct Answer: A — 1
Learn More →
Q. What is the minimum value of f(x) = x^2 - 4x + 6? (2022)
Show solution
Solution
The vertex occurs at x = 2. f(2) = 2.
Correct Answer: B — 3
Learn More →
Q. What is the minimum value of f(x) = x^2 - 6x + 10? (2020)
Show solution
Solution
The vertex form gives the minimum at x = 3. f(3) = 3^2 - 6(3) + 10 = 1.
Correct Answer: A — 4
Learn More →
Q. What is the minimum value of the function f(x) = 4x^2 - 16x + 20? (2021) 2021
Show solution
Solution
The vertex occurs at x = 2. f(2) = 4(2^2) - 16(2) + 20 = 4.
Correct Answer: B — 5
Learn More →
Q. What is the modulus of the complex number 3 + 4i? (2023)
Show solution
Solution
The modulus is calculated as √(3^2 + 4^2) = √(9 + 16) = √25 = 5.
Correct Answer: A — 5
Learn More →
Q. What is the molality of a solution made by dissolving 10 moles of solute in 5 kg of solvent? (2022)
A.
2 m
B.
1 m
C.
0.5 m
D.
3 m
Show solution
Solution
Molality (m) = moles of solute / kg of solvent = 10 moles / 5 kg = 2 m.
Correct Answer: A — 2 m
Learn More →
Q. What is the molar mass of water (H2O)? (2023) 2023
A.
16 g/mol
B.
18 g/mol
C.
20 g/mol
D.
22 g/mol
Show solution
Solution
The molar mass of water is calculated as follows: H (1 g/mol) x 2 + O (16 g/mol) = 2 + 16 = 18 g/mol.
Correct Answer: B — 18 g/mol
Learn More →
Q. What is the molarity of a solution containing 5 moles of solute in 2 liters of solution? (2021) 2021
A.
2.5 M
B.
5 M
C.
10 M
D.
1 M
Show solution
Solution
Molarity (M) = moles of solute / liters of solution = 5 moles / 2 L = 2.5 M.
Correct Answer: A — 2.5 M
Learn More →
Q. What is the molarity of a solution containing 58.5 g of NaCl in 1 liter of solution? (2021)
A.
1 M
B.
0.5 M
C.
2 M
D.
0.1 M
Show solution
Solution
Molarity (M) = moles of solute / liters of solution. Moles of NaCl = 58.5 g / 58.5 g/mol = 1 mol. Therefore, M = 1 mol / 1 L = 1 M.
Correct Answer: A — 1 M
Learn More →
Q. What is the molarity of a solution prepared by dissolving 5 grams of NaCl in enough water to make 250 mL of solution? (Molar mass of NaCl = 58.5 g/mol) (2023)
A.
0.34 M
B.
0.42 M
C.
0.25 M
D.
0.50 M
Show solution
Solution
Molarity (M) = moles of solute / liters of solution. Moles of NaCl = 5 g / 58.5 g/mol = 0.0855 moles. Volume of solution = 250 mL = 0.250 L. M = 0.0855 moles / 0.250 L = 0.342 M, approximately 0.34 M.
Correct Answer: A — 0.34 M
Learn More →
Q. What is the molecular formula of Benzoic acid?
A.
C6H5COOH
B.
C7H6O2
C.
C6H6O
D.
C6H4O2
Show solution
Solution
The molecular formula of Benzoic acid is C7H6O2.
Correct Answer: B — C7H6O2
Learn More →
Showing 751 to 780 of 1233 (42 Pages)