Among the following, which substance is not a compound...?

PPSC Past Papers

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

Among the following, which substance is not a compound...?

(A) H2O

(B) Mg

(C) CO2

(D) NaCl

✅ Correct Answer: Mg

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

Fertilizers are substances containing chemical elements such as manure or mixture of ______...?

(A) Lipids

(B) Carbohydrates

(C) Nitrates

(D) Proteins

✅ Correct Answer: Nitrates

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

The most densest substance on the Earth is __________....?

(A) Platinum

(B) Copper

(C) Steel

(D) Osmium

✅ Correct Answer: Osmium

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

Which of the following occurs when light passes through a substance unchanged...?

(A) Transmission

(B) Reflection

(C) Absorption

(D) Refraction

✅ Correct Answer: Transmission

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

Which of the following substances contain disease producing pathogens in the weakened form...?

(A) Vaccines

(B) Antibiotics

(C) Antibodies

(D) Plasmids

✅ Correct Answer: Vaccines

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

Special type of movement of specific substances through carrier protein is _____...?

(A) Facilitated diffusion

(B) Active transport

(C) Passive transport

(D) Osmosis

✅ Correct Answer: Facilitated diffusion

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

A (an) ______ is a pure substance which contains only one type of molecule made up of atoms of more than one element....?

(A) Compound

(B) Element

(C) Molecule

(D) Atom

✅ Correct Answer: Compound

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

The amount of heat needed to convert a substance from liquid to gas is called...?

(A) Heat of vaporization

(B) Specific heat

(C) Latent heat of fusion

(D) All

✅ Correct Answer: Heat of vaporization

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

A substance that can donate a pair of electron to form coordinate covalent bond...?

(A) Lewis acid

(B) Lewis base

(C) Bronsted—Lowery acid

(D) Bronsted-Lowery base

✅ Correct Answer: Lewis base

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

Which lists the substances from least to most acidic...?

(A) Blood, milk, ammonia, orange juice

(B) Blood, ammonia, milk, orange juice

(C) Milk, blood, orange juice, ammonia

(D) Ammonia, blood, milk, orange juice

✅ Correct Answer: Ammonia, blood, milk, orange juice

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

Which cell component is a jelly-like substance that contains many chemicals and facilitates chemical reactions...?

(A) Nucleus

(B) Cell Wall

(C) Cytoplasm

(D) Cell Membrane

✅ Correct Answer: Cytoplasm

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

What is the substance that causes undesirable change to the environment...?

(A) Climate Change

(B) Pollution

(C) Pollutant

(D) None

✅ Correct Answer: Pollutant

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

Which process is used to get back the solid substances from a solution...?

(A) Crystallization

(B) Distillation

(C) Filtration

(D) Sublimation

✅ Correct Answer: Crystallization

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

A single compound breaks down to form two or more simpler substances are called...?

(A) Combination Reaction

(B) Decomposition Reaction

(C) Neutralization Reaction

(D) Addition Reaction

✅ Correct Answer: Decomposition Reaction

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

A reaction in which a new single compound is formed by the union of two or more substances is known as...?

(A) Decomposition Reaction

(B) Oxidation Reaction

(C) Addition Reaction

(D) Neutralization

✅ Correct Answer: Addition Reaction

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

The process of vaporizing a solid substance and condensing the vapours to form the solid directly is known as...?

(A) Distillation

(B) Sublimation

(C) Filtration

(D) Crystallization

✅ Correct Answer: Sublimation

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

The property of a substance to absorb moisture from the air on exposure is called____________...?

(A) osmosis

(B) deliquescence

(C) efflorescence

(D) desiccation

✅ Correct Answer: deliquescence

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

The simplest kind of matter which cannot be further split up into simpler substances by chemical reactions is called...?

(A) Compound

(B) Atom

(C) Molecule

(D) Element

✅ Correct Answer: Element

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

A substance which produces hydroxyl ion (OH)- in the aqueous solution is called...?

(A) Oxidizing agent

(B) Reducing agent

(C) Base

(D) Acid

✅ Correct Answer: Base

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

Some substances are good conductor of electricity in both the solid and liquid states. These substances are generally______________...?

(A) ionic substances

(B) metallic substances

(C) molecular solids

(D) covalent network solids

✅ Correct Answer: metallic substances

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

A substance which increases the efficiency of a catalyst is termed as:...?

(A) Promoter

(B) Activator

(C) Retarder

(D) Super catalyst

✅ Correct Answer: Promoter

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

A substance which produces hydrogen ion (H+) in the aqueous solution is called...?

(A) Base

(B) Acid

(C) Oxidizing agent

(D) Reducing agent

✅ Correct Answer: Acid

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

Substance used in match sticks ...?

(A) Sulphur

(B) Zinc

(C) Acid

(D) Phosphorus

✅ Correct Answer: Phosphorus

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

Analysis deals with the identification of presence of functional groups in compounds is _______...?

(A) Physical qualitative analysis

(B) Analytical qualitative analysis

(C) Organic qualitative analysis

(D) Inorganic qualitative analysis

✅ Correct Answer: Organic qualitative analysis

Comments

Source: This question is taken from the Everyday Science

💡 English word par Double-Click karein: Urdu meaning + pronunciation 🔊

Among the following, which substance is not a compound...? Mcqs

PPSC Past Papers