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GENERAL-SCIENCE

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1 / 10

Category: GENERAL-SCIENCE

1)

Which of the following is a characteristic property of ionic compounds?

1) Low melting points

2) Good electrical conductivity in solid state

3) High melting and boiling points

4) Poor solubility in water

2 / 10

Category: GENERAL-SCIENCE

2)

Which of the following compounds contains a metal with a variable oxidation state?

1) NaCl

2) CaO

3) CuSO4

4) KBr

3 / 10

Category: GENERAL-SCIENCE

3)

What is the chemical formula of calcium phosphate?

1) CaPO4

2) Ca3(PO4)2

3) Ca(PO4)3

4) Ca(PO4)2

4 / 10

Category: GENERAL-SCIENCE

4)

Which of the following elements is a halogen?

1) Sodium

2) Magnesium

3) Bromine

4) Potassium

5 / 10

Category: GENERAL-SCIENCE

5)

What is the main component of rust?

1) FeO

2) Fe2O3

3) Fe3O4

4) FeS

6 / 10

Category: GENERAL-SCIENCE

6)

Which of the following is an example of a covalent compound?

1) NaCl

2) MgO

3) H2O

4) CaCl2

7 / 10

Category: GENERAL-SCIENCE

7)

What is the oxidation state of chlorine in NaClO3?

1) +1

2) +3

3) +5

4) -1

8 / 10

Category: GENERAL-SCIENCE

8)

Which of the following is a noble gas?

1) Oxygen

2) Nitrogen

3) Helium

4) Hydrogen

9 / 10

Category: GENERAL-SCIENCE

9)

What is the chemical formula of ammonium sulfate?

1) NH4SO4

2) (NH4)2SO4

3) NH4(SO4)2

4) (NH3)2SO4

10 / 10

Category: GENERAL-SCIENCE

10)

Which of the following is an example of a transition metal?

1) Sodium

2) Calcium

3) Iron

4) Argon

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EXAMGK.IN

2025
INDIA'S NO. 1 EDUCATIONAL PORTAL FOR GOVERNMENT EXAMS

“Your go-to for trustworthy content, with the reactivity of a catalyst.”

"Your go-to for trustworthy content, with the reactivity of a catalyst."

Which of the following is a characteristic property of ionic compounds?

Explanation: Ionic compounds typically have high melting and boiling points due to the strong electrostatic forces between ions in their crystal lattice structure.

Which of the following compounds contains a metal with a variable oxidation state?

Explanation: Copper (Cu) in copper sulfate (CuSO4) can have a variable oxidation state, often +1 or +2, which is a characteristic of transition metals.

What is the chemical formula of calcium phosphate?

Explanation: Calcium phosphate has the chemical formula Ca3(PO4)2, indicating that three calcium ions bond with two phosphate ions.

Which of the following elements is a halogen?

Explanation: Bromine (Br) is a halogen, found in Group 17 of the periodic table, and is known for its reactivity with metals to form salts.

What is the main component of rust?

Explanation: Rust mainly consists of iron(III) oxide (Fe2O3), formed when iron reacts with oxygen and water.

Which of the following is an example of a covalent compound?

Explanation: Water (H2O) is a covalent compound where hydrogen and oxygen share electrons to form covalent bonds.

What is the oxidation state of chlorine in NaClO3?

Explanation: In sodium chlorate (NaClO3), chlorine has an oxidation state of +5 to balance the charges of sodium (+1) and oxygen (-2 x 3 = -6).

Which of the following is a noble gas?

Explanation: Helium (He) is a noble gas found in Group 18 of the periodic table, characterized by its inertness and lack of reactivity.

What is the chemical formula of ammonium sulfate?

Explanation: Ammonium sulfate is composed of two ammonium ions (NH4+) and one sulfate ion (SO4^2-), hence the formula (NH4)2SO4.

Which of the following is an example of a transition metal?

Explanation: Iron (Fe) is a transition metal, found in the center of the periodic table, and is known for forming various oxidation states.

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examgk.in

© 2025 . All Rights Reserved.

EXAMGK.IN

2025INDIA'S NO. 1 EDUCATIONAL PORTAL FOR GOVERNMENT EXAMS

📍IN-ORGANIC

“Your go-to for trustworthy content, with the reactivity of a catalyst.”

"Your go-to for trustworthy content, with the reactivity of a catalyst."

Which of the following is a characteristic property of ionic compounds?

Explanation: Ionic compounds typically have high melting and boiling points due to the strong electrostatic forces between ions in their crystal lattice structure.

Which of the following compounds contains a metal with a variable oxidation state?

Explanation: Copper (Cu) in copper sulfate (CuSO4) can have a variable oxidation state, often +1 or +2, which is a characteristic of transition metals.

What is the chemical formula of calcium phosphate?

Explanation: Calcium phosphate has the chemical formula Ca3(PO4)2, indicating that three calcium ions bond with two phosphate ions.

Which of the following elements is a halogen?

Explanation: Bromine (Br) is a halogen, found in Group 17 of the periodic table, and is known for its reactivity with metals to form salts.

What is the main component of rust?

Explanation: Rust mainly consists of iron(III) oxide (Fe2O3), formed when iron reacts with oxygen and water.

Which of the following is an example of a covalent compound?

Explanation: Water (H2O) is a covalent compound where hydrogen and oxygen share electrons to form covalent bonds.

What is the oxidation state of chlorine in NaClO3?

Explanation: In sodium chlorate (NaClO3), chlorine has an oxidation state of +5 to balance the charges of sodium (+1) and oxygen (-2 x 3 = -6).

Which of the following is a noble gas?

Explanation: Helium (He) is a noble gas found in Group 18 of the periodic table, characterized by its inertness and lack of reactivity.

What is the chemical formula of ammonium sulfate?

Explanation: Ammonium sulfate is composed of two ammonium ions (NH4+) and one sulfate ion (SO4^2-), hence the formula (NH4)2SO4.

Which of the following is an example of a transition metal?

Explanation: Iron (Fe) is a transition metal, found in the center of the periodic table, and is known for forming various oxidation states.

Leave a Reply Cancel reply

COPYRIGHT

examgk.in

© 2025 . All Rights Reserved.

2025
INDIA'S NO. 1 EDUCATIONAL PORTAL FOR GOVERNMENT EXAMS