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These types of competitive MCQs appear in the exams like MHT-CET, NEET, JEE (Mains), and other Competitive Examinations, etc. We created all the competitive exam MCQs into several small posts on our website for your convenience.
You will get their respective links in the related posts section provided below.
- Biomolecules Chemistry NEET Questions
- JEE Mains Chemistry Solutions
- Questions on Some Basic Concepts of Chemistry Class 11
Chemistry NEET Objective Questions with Answers for Students
The highest oxidation state of manganese in fluoride is +4 (MnF4) but the highest oxidation state in oxides is +7 (Mn207) because ………
(A) Fluorine is more electronegative than oxygen.
(B) Fluorine does not possess d-orbitals.
(C) fluorine stabilizes lower oxidation state.
(D) In covalent compounds, fluorine can form single bonds only while oxygen forms double bonds.
Option d – In covalent compounds, fluorine can form single bonds only while oxygen forms double bonds
Although Zirconium belongs to the 4d transition series and Hafnium to the 5d transition series even then they show similar physical and chemical properties because ……….
(A) both belong to d-block.
(B) both have the same number of electrons.
(C) both have a similar atomic radius.
(D) both belong to the same group of the periodic table.
Option c – both have a similar atomic radius
Which of the following is a major rivers in Bangladesh which is also the main distributary of the Ganges?
(D) PadmaShow Answer
Why is HCI not used to make the medium acidic in oxidation reactions of KMnO4 in the acidic medium?
(A) Both HCl and KMnO4 act as oxidizing agents.
(B) KMnO4 oxidizes HCl into Cl₂ which is also an oxidizing agent.
(C) KMnO4 is a weaker oxidizing agent than HCl.
(D) KMnO4 acts as a reducing agent in the presence of HCL.
Option b – KMnO4 oxidizes HCl into Cl₂ which is also an oxidizing agent
Generally, transition elements and their salts are colored due to the presence of unpaired electrons in metal ions. Which of the following compounds are colored?
(B) Ce (SO4)2
(D) Both A and B
Option d – Both A and B
Which of the following is the leading producer of rice?
(D) CubaShow Answer
The electronic configuration of Cu(II) is 3d9 whereas that of Cu(I) is 3d10. Which of the following is correct?
(A) Cu(II) is more stable
(B) Cu(II) is less stable
(C) Cu(I) and Cu(II) are equally stable
(D) Stability of Cu(I) and Cu(II) depends on the nature of copper salts
Option a – Cu(II) is more stable
Interstitial compounds are formed when small atoms are trapped inside the crystal lattice of metals. Which of the following is not the characteristic property of interstitial compounds?
(A) They have high melting points in comparison to pure metals.
(B) They are very hard.
(C) They retain metallic conductivity.
(D) They are chemically very reactive.
Option d – They are chemically very reactive
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