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States of Matter Class 11 MCQ for NEET. We covered all the States of Matter Class 11 MCQ for NEET in this post for free so that you can practice well for the exam.
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MCQ on States of Matter for NEET Students
Which of the following statements about nickel electroplating is accurate?
(A) Both the object and the nickel rod act as the anode
(B) Both the object and the nickel rod act as the cathode
(C) The object serves as the cathode and the nickel rod as the anode
(D) The object serves as the anode and the nickel rod as the cathode
Option c – The object serves as the cathode and the nickel rod as the anode
What is the correct order of Lewis acid strength among the boron halides?
(A) BF₃ < BCl₃ < BBr₃ < BI₃
(B) BF₃ < BBr₃ < BCl₃ < BI₃
(C) BI₃ < BBr₃ < BCl₃ < BF₃
(D) BI₃ < BCl₃ < BBr₃ < BF₃
Option a – BF₃ < BCl₃ < BBr₃ < BI₃
What are the products formed when PCl₃ undergoes hydrolysis?
(A) PH₃ and HClO
(B) H₃PO₄ and HCl
(C) H₃PO₃ and HCl
(D) H₃PO₃ and HClO
Option c – H₃PO₃ and HCl
Which of the following statements is incorrect?
(A) Tertiary free radicals are more stable than secondary ones
(B) Secondary free radicals are more stable than primary ones
(C) Tertiary carbocations are more stable than secondary carbocations
(D) Tertiary carbanions are more stable than secondary carbanions
Option d – Tertiary carbanions are more stable than secondary carbanions
A white solid forms when MgCO₃ reacts with Na₂HPO₄. What is the precipitate?
(A) MgNH₄PO₄
(B) MgCO₃
(C) MgNH₄(HCO₃)₃
(D) Mg(HCO₃)₂
Option a – MgNH₄PO₄
A mixture contains pentane and hexane in a 1:4 mole ratio. Their pure vapor pressures at 20 °C are 440 mm Hg and 120 mm Hg, respectively. What is the mole fraction of pentane in the vapor?
(A) 0.549
(B) 0.200
(C) 0.786
(D) 0.478
Option d – 0.478
The bond order in NO is 2.5, whereas in NO⁺ it is 3. What can be inferred?
(A) NO and NO⁺ have the same bond length
(B) Bond length in NO is longer than in NO⁺
(C) Bond length in NO⁺ is longer than in NO
(D) Bond length comparison is not possible
Option b – Bond length in NO is longer than in NO⁺
Calculate the total oxidation number of carbon atoms in C₆H₅CHO.
(A) +2
(B) 0
(C) +4
(D) –4
Option d – –4
Phosphine ignites spontaneously in air due to the presence of which of the following impurities?
(I) P₄O₁₀
(II) NaH₂PO₂
(III) P₂H₄
(IV) P₄
(A) I
(B) I, II
(C) III, IV
(D) I, IV
Option c – III, IV
Which of the following compounds is known to exist?
(A) KHF₂
(B) KHCl₂
(C) KHBr₂
(D) KHI₂
Option a – KHF₂
Which reaction leads to the formation of a white precipitate with propyne?
(A) Reaction with ammoniacal AgNO₃
(B) Reaction with Fehling’s reagent
(C) Reaction with Baeyer’s reagent
(D) Reaction with bromine water
Option a – Reaction with ammoniacal AgNO₃
Drugs used to reduce anxiety and induce relaxation belong to which category?
(A) Antacids
(B) Tranquilizers
(C) Non-narcotic pain relievers
(D) Antihistamines
Option b – Tranquilizers
What is the name of the metallurgical method in which the metal is obtained in molten form?
(A) Smelting
(B) Roasting
(C) Calcination
(D) Froth flotation
Option a – Smelting
Which of the following actions would shift the equilibrium solely in the reverse direction?
(A) Raising the concentration of a reactant
(B) Continuously removing one or more products
(C) Increasing the concentration of one or more products
(D) Introducing a catalyst
Option c – Increasing the concentration of one or more products
A thermodynamic change in a gas occurs without any change in volume. What is this process called?
(A) Isochoric process
(B) Isobaric process
(C) Isothermal process
(D) Adiabatic process
Option a – Isochoric process
Which of the following has the highest boiling point among H₂O, H₂S, H₂Se, and H₂Te?
(A) H₂O
(B) H₂Te
(C) H₂S
(D) H₂Se
Option a – H₂O
If Nb represents the number of electrons in bonding orbitals and Na represents those in antibonding orbitals, which condition implies molecular stability?
(A) The molecule is stable if Nb > Na
(B) The molecule is stable if Na > Nb
(C) The molecule is stable when Nb = Na
(D) The molecule is unstable if Nb > Na
Option a – The molecule is stable if Nb > Na
Which method is typically employed to precipitate colloidal particles?
(A) Dialysis
(B) Peptization
(C) Electrodialysis
(D) Addition of an excess electrolyte
Option d – Addition of an excess electrolyte
Elements with high first ionization enthalpy usually have which of the following characteristics?
(A) Large atomic size
(B) Low nuclear charge
(C) Strongly held outer electrons
(D) Weakly held outer electrons
Option c – Strongly held outer electrons
Which of the following sequences correctly shows increasing wavelength in the electromagnetic spectrum?
(A) X-rays < UV rays < infrared < radio waves
(B) Radio waves < infrared < UV rays < X-rays
(C) UV < infrared < radio waves < X-rays
(D) Infrared < radio waves < UV rays < X-rays
Option a – X-rays < UV rays < infrared < radio waves
Colligative properties can be applied in which of the following cases?
(A) Using salt to melt ice
(B) Removing salt from seawater
(C) Finding molar mass of solutes
(D) All of the above
Option d – All of the above
Which statement regarding biochemical oxygen demand (BOD) is accurate?
(A) Aerobic bacteria lower the BOD value
(B) Anaerobic bacteria increase BOD levels
(C) Clean water has a BOD value exceeding 10 ppm
(D) Water with high pollution shows a BOD above 10 ppm
Option d – Water with high pollution shows a BOD above 10 ppm
Two identical flasks are connected by a narrow tube. Initially, both contain 1.2 mol of O₂ at 150 K and 0.5 atm. If one flask is heated to 300 K, how are the moles of O₂ distributed?
(A) 0.2 mol in the 150 K flask and 1 mol in the 300 K flask
(B) 0.8 mol in the 150 K flask and 0.4 mol in the 300 K flask
(C) 0.4 mol in the 150 K flask and 0.8 mol in the 300 K flask
(D) 1 mol in the 150 K flask and 0.2 mol in the 300 K flask
Option b – 0.8 mol in the 150 K flask and 0.4 mol in the 300 K flask
Identify the incorrect statement regarding biomolecules.
(A) Adenine and guanine are purine bases present in both RNA and DNA
(B) Genetic data is stored in DNA as sequences of nucleotides
(C) Each amino acid is encoded by a triplet of nucleotides
(D) tRNA holds the genetic code used for protein formation
Option d – tRNA holds the genetic code used for protein formation
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