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UPPSC Health Education Officer (HEO) 2026 Mock Test Series with Answers | Military Brat Defence Academy
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Series: UPPSC Health Education Officer (HEO) 2026 Mock Test Series
QID #24858
AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Chemistry Easy
Identify the term that accepts protons or increases hydroxide-ion concentration in water.
A
Electrolysis
B
Base
C
Reduction
D
Catalyst
Correct Answer: B. Base
Question: Identify the term that accepts protons or increases hydroxide-ion concentration in water.
A. Electrolysis
B. Base
C. Reduction
D. Catalyst
Correct Answer: B. Base
Explanation: Base accepts protons or increases hydroxide-ion concentration in water. The other choices describe different concepts.
QID #24857
AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Chemistry Easy
Identify the term that donates protons or increases hydrogen-ion concentration in water.
A
Acid
B
pH
C
Neutralization
D
Oxidation
Correct Answer: A. Acid
Question: Identify the term that donates protons or increases hydrogen-ion concentration in water.
A. Acid
B. pH
C. Neutralization
D. Oxidation
Correct Answer: A. Acid
Explanation: Acid donates protons or increases hydrogen-ion concentration in water. The other choices describe different concepts.
QID #24856
AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Chemistry Easy
Identify the term that involves sharing of electron pairs between atoms.
A
Ionic bond
B
Acid
C
Base
D
Covalent bond
Correct Answer: D. Covalent bond
Question: Identify the term that involves sharing of electron pairs between atoms.
A. Ionic bond
B. Acid
C. Base
D. Covalent bond
Correct Answer: D. Covalent bond
Explanation: Covalent bond involves sharing of electron pairs between atoms. The other choices describe different concepts.
QID #24855
AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Chemistry Easy
Identify the term that forms through electrostatic attraction between oppositely charged ions.
A
Atomic number
B
Isotope
C
Ionic bond
D
Mixture
Correct Answer: C. Ionic bond
Question: Identify the term that forms through electrostatic attraction between oppositely charged ions.
A. Atomic number
B. Isotope
C. Ionic bond
D. Mixture
Correct Answer: C. Ionic bond
Explanation: Ionic bond forms through electrostatic attraction between oppositely charged ions. The other choices describe different concepts.
QID #24854
AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Chemistry Easy
Identify the term that has the same proton number but a different neutron number.
A
Compound
B
Isotope
C
Atom
D
Element
Correct Answer: B. Isotope
Question: Identify the term that has the same proton number but a different neutron number.
A. Compound
B. Isotope
C. Atom
D. Element
Correct Answer: B. Isotope
Explanation: Isotope has the same proton number but a different neutron number. The other choices describe different concepts.
QID #24853
AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Chemistry Easy
Identify the term that equals the number of protons in an atomic nucleus.
A
Atomic number
B
Alloy
C
Hard water
D
Corrosion
Correct Answer: A. Atomic number
Question: Identify the term that equals the number of protons in an atomic nucleus.
A. Atomic number
B. Alloy
C. Hard water
D. Corrosion
Correct Answer: A. Atomic number
Explanation: Atomic number equals the number of protons in an atomic nucleus. The other choices describe different concepts.
QID #24852
AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Chemistry Easy
Identify the term that contains substances physically combined in variable proportions.
A
Catalyst
B
Electrolysis
C
Polymer
D
Mixture
Correct Answer: D. Mixture
Question: Identify the term that contains substances physically combined in variable proportions.
A. Catalyst
B. Electrolysis
C. Polymer
D. Mixture
Correct Answer: D. Mixture
Explanation: Mixture contains substances physically combined in variable proportions. The other choices describe different concepts.
QID #24851
AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Chemistry Easy
Identify the term that contains elements chemically combined in fixed proportions.
A
Oxidation
B
Reduction
C
Compound
D
Neutralization
Correct Answer: C. Compound
Question: Identify the term that contains elements chemically combined in fixed proportions.
A. Oxidation
B. Reduction
C. Compound
D. Neutralization
Correct Answer: C. Compound
Explanation: Compound contains elements chemically combined in fixed proportions. The other choices describe different concepts.
QID #24850
AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Chemistry Easy
Identify the term that contains atoms with the same atomic number.
A
pH
B
Element
C
Acid
D
Base
Correct Answer: B. Element
Question: Identify the term that contains atoms with the same atomic number.
A. pH
B. Element
C. Acid
D. Base
Correct Answer: B. Element
Explanation: Element contains atoms with the same atomic number. The other choices describe different concepts.
QID #24849
AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Chemistry Easy
Identify the term that is the smallest unit retaining the chemical identity of an element.
A
Atom
B
Isotope
C
Ionic bond
D
Covalent bond
Correct Answer: A. Atom
Question: Identify the term that is the smallest unit retaining the chemical identity of an element.
A. Atom
B. Isotope
C. Ionic bond
D. Covalent bond
Correct Answer: A. Atom
Explanation: Atom is the smallest unit retaining the chemical identity of an element. The other choices describe different concepts.
QID #24848
AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Chemistry Easy
Which statement correctly describes Corrosion?
A
is gradual deterioration of a material through chemical reactions
B
is the smallest unit retaining the chemical identity of an element
C
contains atoms with the same atomic number
D
contains elements chemically combined in fixed proportions
Correct Answer: A. is gradual deterioration of a material through chemical reactions
Question: Which statement correctly describes Corrosion?
A. is gradual deterioration of a material through chemical reactions
B. is the smallest unit retaining the chemical identity of an element
C. contains atoms with the same atomic number
D. contains elements chemically combined in fixed proportions
Correct Answer: A. is gradual deterioration of a material through chemical reactions
Explanation: Corrosion is gradual deterioration of a material through chemical reactions. The other choices describe different concepts.
QID #24847
AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Chemistry Easy
Which statement correctly describes Hard water?
A
is a macromolecule built from repeating monomer units
B
is a metallic material containing more than one element
C
is gradual deterioration of a material through chemical reactions
D
contains appreciable dissolved calcium or magnesium ions
Correct Answer: D. contains appreciable dissolved calcium or magnesium ions
Question: Which statement correctly describes Hard water?
A. is a macromolecule built from repeating monomer units
B. is a metallic material containing more than one element
C. is gradual deterioration of a material through chemical reactions
D. contains appreciable dissolved calcium or magnesium ions
Correct Answer: D. contains appreciable dissolved calcium or magnesium ions
Explanation: Hard water contains appreciable dissolved calcium or magnesium ions. The other choices describe different concepts.
QID #24846
AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Chemistry Easy
Which statement correctly describes Alloy?
A
changes reaction rate without being consumed overall
B
uses electric current to drive a non-spontaneous chemical change
C
is a metallic material containing more than one element
D
involves gain of electrons or decrease in oxidation state
Correct Answer: C. is a metallic material containing more than one element
Question: Which statement correctly describes Alloy?
A. changes reaction rate without being consumed overall
B. uses electric current to drive a non-spontaneous chemical change
C. is a metallic material containing more than one element
D. involves gain of electrons or decrease in oxidation state
Correct Answer: C. is a metallic material containing more than one element
Explanation: Alloy is a metallic material containing more than one element. The other choices describe different concepts.
QID #24845
AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Chemistry Easy
Which statement correctly describes Polymer?
A
involves loss of electrons or increase in oxidation state
B
is a macromolecule built from repeating monomer units
C
is a logarithmic measure related to hydrogen-ion activity
D
is reaction of an acid with a base to form salt and water
Correct Answer: B. is a macromolecule built from repeating monomer units
Question: Which statement correctly describes Polymer?
A. involves loss of electrons or increase in oxidation state
B. is a macromolecule built from repeating monomer units
C. is a logarithmic measure related to hydrogen-ion activity
D. is reaction of an acid with a base to form salt and water
Correct Answer: B. is a macromolecule built from repeating monomer units
Explanation: Polymer is a macromolecule built from repeating monomer units. The other choices describe different concepts.
QID #24844
AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Chemistry Easy
Which statement correctly describes Electrolysis?
A
uses electric current to drive a non-spontaneous chemical change
B
involves sharing of electron pairs between atoms
C
donates protons or increases hydrogen-ion concentration in water
D
accepts protons or increases hydroxide-ion concentration in water
Correct Answer: A. uses electric current to drive a non-spontaneous chemical change
Question: Which statement correctly describes Electrolysis?
A. uses electric current to drive a non-spontaneous chemical change
B. involves sharing of electron pairs between atoms
C. donates protons or increases hydrogen-ion concentration in water
D. accepts protons or increases hydroxide-ion concentration in water
Correct Answer: A. uses electric current to drive a non-spontaneous chemical change
Explanation: Electrolysis uses electric current to drive a non-spontaneous chemical change. The other choices describe different concepts.
QID #24843
AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Chemistry Easy
Which statement correctly describes Catalyst?
A
equals the number of protons in an atomic nucleus
B
has the same proton number but a different neutron number
C
forms through electrostatic attraction between oppositely charged ions
D
changes reaction rate without being consumed overall
Correct Answer: D. changes reaction rate without being consumed overall
Question: Which statement correctly describes Catalyst?
A. equals the number of protons in an atomic nucleus
B. has the same proton number but a different neutron number
C. forms through electrostatic attraction between oppositely charged ions
D. changes reaction rate without being consumed overall
Correct Answer: D. changes reaction rate without being consumed overall
Explanation: Catalyst changes reaction rate without being consumed overall. The other choices describe different concepts.
QID #24842
AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Chemistry Easy
Which statement correctly describes Reduction?
A
contains elements chemically combined in fixed proportions
B
contains substances physically combined in variable proportions
C
involves gain of electrons or decrease in oxidation state
D
contains atoms with the same atomic number
Correct Answer: C. involves gain of electrons or decrease in oxidation state
Question: Which statement correctly describes Reduction?
A. contains elements chemically combined in fixed proportions
B. contains substances physically combined in variable proportions
C. involves gain of electrons or decrease in oxidation state
D. contains atoms with the same atomic number
Correct Answer: C. involves gain of electrons or decrease in oxidation state
Explanation: Reduction involves gain of electrons or decrease in oxidation state. The other choices describe different concepts.
QID #24841
AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Chemistry Easy
Which statement correctly describes Oxidation?
A
is the smallest unit retaining the chemical identity of an element
B
involves loss of electrons or increase in oxidation state
C
contains appreciable dissolved calcium or magnesium ions
D
is gradual deterioration of a material through chemical reactions
Correct Answer: B. involves loss of electrons or increase in oxidation state
Question: Which statement correctly describes Oxidation?
A. is the smallest unit retaining the chemical identity of an element
B. involves loss of electrons or increase in oxidation state
C. contains appreciable dissolved calcium or magnesium ions
D. is gradual deterioration of a material through chemical reactions
Correct Answer: B. involves loss of electrons or increase in oxidation state
Explanation: Oxidation involves loss of electrons or increase in oxidation state. The other choices describe different concepts.
QID #24840
AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Chemistry Easy
Which statement correctly describes Neutralization?
A
is reaction of an acid with a base to form salt and water
B
uses electric current to drive a non-spontaneous chemical change
C
is a macromolecule built from repeating monomer units
D
is a metallic material containing more than one element
Correct Answer: A. is reaction of an acid with a base to form salt and water
Question: Which statement correctly describes Neutralization?
A. is reaction of an acid with a base to form salt and water
B. uses electric current to drive a non-spontaneous chemical change
C. is a macromolecule built from repeating monomer units
D. is a metallic material containing more than one element
Correct Answer: A. is reaction of an acid with a base to form salt and water
Explanation: Neutralization is reaction of an acid with a base to form salt and water. The other choices describe different concepts.
QID #24839
AIIMS UPPSC Health Education Officer (HEO) 2026 Mock Test Series General Science Chemistry Easy
Which statement correctly describes pH?
A
involves loss of electrons or increase in oxidation state
B
involves gain of electrons or decrease in oxidation state
C
changes reaction rate without being consumed overall
D
is a logarithmic measure related to hydrogen-ion activity
Correct Answer: D. is a logarithmic measure related to hydrogen-ion activity
Question: Which statement correctly describes pH?
A. involves loss of electrons or increase in oxidation state
B. involves gain of electrons or decrease in oxidation state
C. changes reaction rate without being consumed overall
D. is a logarithmic measure related to hydrogen-ion activity
Correct Answer: D. is a logarithmic measure related to hydrogen-ion activity
Explanation: pH is a logarithmic measure related to hydrogen-ion activity. The other choices describe different concepts.
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