Free MCQs with Answers | Military Brat Defence Academy
Result MNS 2026 Result Declared Jobs Latest Updates Join Hunter Batch
Free MCQ Practice Library

Free MCQs with Answers | Military Brat Defence Academy

Practice exam-wise, class-wise and subject-wise MCQs with instant answers, explanations, SEO-friendly question pages and shareable result image cards.

Total MCQs: 20,153
Page: 359/1,008
QID #24908 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series Bilingual General Science Chemistry Medium

In Chemistry, which description is associated with Corrosion?

Correct Answer: A. is gradual deterioration of a material through chemical reactions
Corrosion is gradual deterioration of a material through chemical reactions. The other choices describe different concepts.
View Question WhatsApp Share
QID #24907 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series Bilingual General Science Chemistry Medium

In Chemistry, which description is associated with Hard water?

Correct Answer: D. contains appreciable dissolved calcium or magnesium ions
Hard water contains appreciable dissolved calcium or magnesium ions. The other choices describe different concepts.
View Question WhatsApp Share
QID #24906 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series Bilingual General Science Chemistry Medium

In Chemistry, which description is associated with Alloy?

Correct Answer: C. is a metallic material containing more than one element
Alloy is a metallic material containing more than one element. The other choices describe different concepts.
View Question WhatsApp Share
QID #24905 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series Bilingual General Science Chemistry Medium

In Chemistry, which description is associated with Polymer?

Correct Answer: B. is a macromolecule built from repeating monomer units
Polymer is a macromolecule built from repeating monomer units. The other choices describe different concepts.
View Question WhatsApp Share
QID #24904 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series Bilingual General Science Chemistry Medium

In Chemistry, which description is associated with Electrolysis?

Correct Answer: A. uses electric current to drive a non-spontaneous chemical change
Electrolysis uses electric current to drive a non-spontaneous chemical change. The other choices describe different concepts.
View Question WhatsApp Share
QID #24903 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series Bilingual General Science Chemistry Medium

In Chemistry, which description is associated with Catalyst?

Correct Answer: D. changes reaction rate without being consumed overall
Catalyst changes reaction rate without being consumed overall. The other choices describe different concepts.
View Question WhatsApp Share
QID #24902 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series Bilingual General Science Chemistry Medium

In Chemistry, which description is associated with Reduction?

Correct Answer: C. involves gain of electrons or decrease in oxidation state
Reduction involves gain of electrons or decrease in oxidation state. The other choices describe different concepts.
View Question WhatsApp Share
QID #24901 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series Bilingual General Science Chemistry Medium

In Chemistry, which description is associated with Oxidation?

Correct Answer: B. involves loss of electrons or increase in oxidation state
Oxidation involves loss of electrons or increase in oxidation state. The other choices describe different concepts.
View Question WhatsApp Share
QID #24900 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series Bilingual General Science Chemistry Medium

In Chemistry, which description is associated with Neutralization?

Correct Answer: A. is reaction of an acid with a base to form salt and water
Neutralization is reaction of an acid with a base to form salt and water. The other choices describe different concepts.
View Question WhatsApp Share
QID #24899 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series Bilingual General Science Chemistry Medium

In Chemistry, which description is associated with pH?

Correct Answer: D. is a logarithmic measure related to hydrogen-ion activity
pH is a logarithmic measure related to hydrogen-ion activity. The other choices describe different concepts.
View Question WhatsApp Share
QID #24898 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series Bilingual General Science Chemistry Medium

In Chemistry, which description is associated with Base?

Correct Answer: C. accepts protons or increases hydroxide-ion concentration in water
Base accepts protons or increases hydroxide-ion concentration in water. The other choices describe different concepts.
View Question WhatsApp Share
QID #24897 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series Bilingual General Science Chemistry Medium

In Chemistry, which description is associated with Acid?

Correct Answer: B. donates protons or increases hydrogen-ion concentration in water
Acid donates protons or increases hydrogen-ion concentration in water. The other choices describe different concepts.
View Question WhatsApp Share
QID #24896 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series Bilingual General Science Chemistry Medium

In Chemistry, which description is associated with Covalent bond?

Correct Answer: A. involves sharing of electron pairs between atoms
Covalent bond involves sharing of electron pairs between atoms. The other choices describe different concepts.
View Question WhatsApp Share
QID #24895 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series Bilingual General Science Chemistry Medium

In Chemistry, which description is associated with Ionic bond?

Correct Answer: D. forms through electrostatic attraction between oppositely charged ions
Ionic bond forms through electrostatic attraction between oppositely charged ions. The other choices describe different concepts.
View Question WhatsApp Share
QID #24894 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series Bilingual General Science Chemistry Medium

In Chemistry, which description is associated with Isotope?

Correct Answer: C. has the same proton number but a different neutron number
Isotope has the same proton number but a different neutron number. The other choices describe different concepts.
View Question WhatsApp Share
QID #24893 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series Bilingual General Science Chemistry Medium

In Chemistry, which description is associated with Atomic number?

Correct Answer: B. equals the number of protons in an atomic nucleus
Atomic number equals the number of protons in an atomic nucleus. The other choices describe different concepts.
View Question WhatsApp Share
QID #24892 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series Bilingual General Science Chemistry Medium

In Chemistry, which description is associated with Mixture?

Correct Answer: A. contains substances physically combined in variable proportions
Mixture contains substances physically combined in variable proportions. The other choices describe different concepts.
View Question WhatsApp Share
QID #24891 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series Bilingual General Science Chemistry Medium

In Chemistry, which description is associated with Compound?

Correct Answer: D. contains elements chemically combined in fixed proportions
Compound contains elements chemically combined in fixed proportions. The other choices describe different concepts.
View Question WhatsApp Share
QID #24890 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series Bilingual General Science Chemistry Medium

In Chemistry, which description is associated with Element?

Correct Answer: C. contains atoms with the same atomic number
Element contains atoms with the same atomic number. The other choices describe different concepts.
View Question WhatsApp Share
QID #24889 AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series Bilingual General Science Chemistry Medium

In Chemistry, which description is associated with Atom?

Correct Answer: B. is the smallest unit retaining the chemical identity of an element
Atom is the smallest unit retaining the chemical identity of an element. The other choices describe different concepts.
View Question WhatsApp Share

Free MCQs with Answers and Explanations

This MCQ library is created for MNS, Nursing Officer, English, GK, MBA and competitive exam students. Every question has option-wise content, instant checking, a dedicated SEO view page and social share support.

Practice Result
Attempted0
Correct0
Wrong0