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mcq on Free Chapter Wise test for NEET Students
When excess silver nitrate is added to 100 mL of a 0.01 M solution of dichlorotetraaquachromium(III) chloride, how many moles of silver chloride will precipitate?
(A) 0.001 mol
(B) 0.002 mol
(C) 0.003 mol
(D) 0.01 mol
Option a – 0.001 mol
What is the correct order of increasing basicity among the xenon fluorides?
(A) XeF₆ < XeF₄ < XeF₂
(B) XeF₂ < XeF₄ < XeF₆
(C) XeF₄ < XeF₆ < XeF₂
(D) XeF₂ < XeF₆ < XeF₄
Option a – XeF₆ < XeF₄ < XeF₂
Which vitamin contains a long-chain aromatic structure?
(A) Vitamin C
(B) Vitamin K
(C) Vitamin B5
(D) Vitamin B6
Option b – Vitamin K
Why is sodium sulfate soluble in water, while barium sulfate is only sparingly soluble?
(i) The hydration energy of Na₂SO₄ is greater than its lattice energy.
(ii) BaSO₄ has a lattice energy higher than its hydration energy.
(iii) Lattice energy plays no role in solubility.
(iv) The lattice energy of Na₂SO₄ exceeds its hydration energy.
(A) i, ii
(B) ii, iii
(C) iii, iv
(D) iv
Option a – i, ii
Which statement is false regarding the properties of interhalogen compounds?
(A) They exhibit covalent Bonding.
(B) Their reactivity surpasses that of halogens.
(C) They are all paramagnetic.
(D) They serve as strong oxidizing agents.
Option c – They are all paramagnetic.
Identify the incorrect statement related to zeolites.
(A) Zeolites are 3D aluminosilicates.
(B) They assist in the cracking of Hydrocarbons.
(C) Zeolites function as ion exchangers.
(D) All of the above
Option d – All of the above
What is the product formed when (CH₃)₂C=NOH undergoes reduction with sodium and ethanol?
(A) Propan-2-amine
(B) Propan-1-amine
(C) Ethane-1,2-diamine
(D) Propane-1,3-diamine
Option a – Propan-2-amine
A crystalline Solid contains M atoms at cube corners, O atoms at edge centers, and Na atoms at the body center. What is the empirical formula of this compound?
(A) NaMO
(B) NaMO₃
(C) Na₂MO₃
(D) NaMO₄
Option b – NaMO₃
A 1.0 M urea aqueous solution is isotonic with which of the following?
(A) 0.5 M NaCl solution
(B) 0.5 M sugar solution
(C) 0.5 M BaCl₂ solution
(D) 1.0 M benzoic Acid in benzene
Option a – 0.5 M NaCl solution
Which among the following is considered a biodegradable pollutant?
(A) Heavy Metals
(B) Household waste
(C) Plastic products
(D) DDT
Option b – Household waste
A broad-Spectrum antibiotic is one that:
(A) Destroys antibodies
(B) Acts on a particular antigen
(C) Targets various antigens
(D) Interacts with both antigens and antibodies
Option c – Targets various antigens
Froth floatation is the most suitable concentration method for which ore?
(A) Magnetite
(B) Cryolite
(C) Sphalerite
(D) Malachite
Option c – Sphalerite
How are the order and molecularity of a chemical reaction determined?
(A) Experimentally and theoretically, respectively
(B) Theoretically and experimentally, respectively
(C) Only through experiments
(D) Only through theoretical analysis
Option a – Experimentally and theoretically, respectively
Which of the following statements about chemical equilibrium is incorrect?
(A) Changing temperature or pressure can shift the equilibrium position.
(B) At equilibrium, concentrations of all species remain constant.
(C) The same equilibrium is reached whether starting with reactants or products.
(D) Adding a catalyst favors the forward reaction.
Option d – Adding a catalyst favors the forward reaction.
During a process, 238 J of work is done on a system and 54 J of Heat is released. What happens to the internal energy of the system?
(A) Increases by 54 J
(B) Decreases by 184 J
(C) Increases by 184 J
(D) Increases by 292 J
Option c – Increases by 184 J
Which of the following compounds does not exhibit hydrogen Bonding?
(A) HF
(B) NH₃
(C) H₂O
(D) HCl
Option d – HCl
Identify the incorrect statement about catalysts:
(A) Catalysts increase the rate of a reaction.
(B) Catalysts work by lowering activation energy.
(C) Catalysts alter the equilibrium position in a reversible reaction.
(D) Even a small amount of catalyst can accelerate a large-scale reaction.
Option c – Catalysts alter the equilibrium position in a reversible reaction.
Which statement about the modern Periodic Table is incorrect?
(i) Horizontal rows are periods, vertical columns are groups.
(ii) Transition Metals occupy periods 4 to 7.
(iii) Inner-transition Metals are found in periods 6 and 7.
(iv) Elements with atomic numbers 58 to 71 are actinides, while 90 to 103 are lanthanides.
(A) Both iii and iv
(B) Both i and ii
(C) Only iii
(D) Only iv
Option d – Only iv
Which statement about the Linear Combination of Atomic Orbitals (LCAO) is incorrect?
(A) Atomic orbitals of similar energies combine to form Molecular orbitals.
(B) Addition of orbitals forms Bonding Molecular orbitals.
(C) Antibonding orbitals have lower energy than atomic orbitals.
(D) A Molecular orbital can contain a maximum of two electrons.
Option c – Antibonding orbitals have lower energy than atomic orbitals.
Which ionic compound crystallizes in an anti-fluorite type structure?
(A) NaCl
(B) Na₂O
(C) CaF₂
(D) Al₂O₃
Option b – Na₂O
Which is the correct order of negative inductive effect for the given groups: -NH₂, -CN, -C₆H₅, and -NO₂?
(A) -NH₂ > -CN > -C₆H₅ > -NO₂
(B) -NO₂ > -CN > -NH₂ > -C₆H₅
(C) -CN > -NH₂ > -C₆H₅ > -NO₂
(D) -CN > -NO₂ > -NH₂ > -C₆H₅
Option b – -NO₂ > -CN > -NH₂ > -C₆H₅
A car tyre has a volume of 10 liters at 20 °C and is inflated to 4 atm. What will be the pressure when the temperature rises to 50 °C?
(A) 2.2 atm
(B) 3.8 atm
(C) 4.4 atm
(D) 5.0 atm
Option c – 4.4 atm
When 0.3 g of an Organic substance is burned completely, it produces 0.54 g of water and 0.88 g of carbon dioxide. What is the percentage composition of carbon and hydrogen?
(A) C = 20%, H = 80%
(B) C = 80%, H = 20%
(C) C = 75%, H = 25%
(D) C = 25%, H = 75%
Option b – C = 80%, H = 20%
Which statement(s) about thin-layer chromatography is/are correct?
(i) The stationary phase is a Solid.
(ii) The mobile phase is a liquid.
(iii) It is an example of adsorption chromatography.
(iv) It is a type of partition chromatography.
(A) (i), (ii), (iii)
(B) (ii), (iii)
(C) (iii)
(D) (iv)
Option a – (i), (ii), (iii)
Choose the correct statement about electrophiles:
(A) Electrophiles are negatively charged species that accept electrons from other electrophiles.
(B) Most electrophiles are neutral and bond by accepting electrons from nucleophiles.
(C) Electrophiles may be neutral or positively charged and accept electron pairs from nucleophiles.
(D) Electrophiles are negatively charged and form bonds by gaining electrons from nucleophiles.
Option c – Electrophiles may be neutral or positively charged and accept electron pairs from nucleophiles.
Which of the following reagents will react with ethane?
(i) Alkaline potassium permanganate
(ii) Bromine in the presence of Light
(iii) Nitric Acid at 400 °C
(iv) A mixture of H₂SO₄ and SO₃ under prolonged heating
(A) (i), (ii)
(B) (ii), (iii)
(C) (iii), (iv)
(D) (i), (iv)
Option b – (ii), (iii)
Compound A undergoes sulphonation, and subsequent fusion with sodium hydroxide gives a mixture of ortho- and para-cresol. What is compound A?
(A) Benzene
(B) Toluene
(C) Phenol
(D) Benzenesulphonic Acid
Option b – Toluene
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