Q. 1
General Knowledge
Difficulty: Easy
(1 Mark)
What is H_5 N_1?
💡
Step-by-Step Explanation & Concept Rationale
H_5 N_1 is a highly infectious subtype of the Influenza A virus that primarily affects birds but can infect humans.
Q. 2
General Knowledge
Difficulty: Medium
(1 Mark)
Which of the following vessels of blood carry blood from different parts of the body to heart?
💡
Step-by-Step Explanation & Concept Rationale
Veins are the blood vessels responsible for transporting deoxygenated blood from various body tissues back to the heart.
Q. 3
General Knowledge
Difficulty: Easy
(1 Mark)
What is the freezing point of heavy water?
💡
Step-by-Step Explanation & Concept Rationale
Heavy water (deuterium oxide) has a higher freezing point than normal water, occurring at approximately 3.82 degrees Celsius.
Q. 4
General Knowledge
Difficulty: Medium
(1 Mark)
"Every action has reaction which are equal but in opposite direction". The law is called:
💡
Step-by-Step Explanation & Concept Rationale
Newton's third law states that for every action force, there is an equal and opposite reaction force.
Q. 5
General Knowledge
Difficulty: Easy
(1 Mark)
Pure water can be obtained from seawater by the process of:
💡
Step-by-Step Explanation & Concept Rationale
Distillation involves boiling seawater to create steam and then condensing it into pure liquid water, leaving salts behind.
Q. 6
General Knowledge
Difficulty: Easy
(1 Mark)
Common salt is obtained from seawater by:
💡
Step-by-Step Explanation & Concept Rationale
Seawater is collected in shallow ponds where solar heat causes the water to evaporate, leaving behind salt crystals.
Q. 7
General Knowledge
Difficulty: Easy
(1 Mark)
Gasoline is obtained from crude oil by the process of:
💡
Step-by-Step Explanation & Concept Rationale
Fractional distillation separates crude oil into different components, like gasoline, based on their different boiling points.
Q. 8
General Knowledge
Difficulty: Easy
(1 Mark)
An electric kettle used for boiling hard water has a white scale deposited on its heating element. This consists of:
💡
Step-by-Step Explanation & Concept Rationale
Limescale is primarily composed of calcium and magnesium carbonates that precipitate out of hard water when heated.
Q. 9
General Knowledge
Difficulty: Easy
(1 Mark)
Washing soda is:
💡
Step-by-Step Explanation & Concept Rationale
Washing soda is the chemical compound sodium carbonate decahydrate, commonly used as a water softener.
Q. 10
General Knowledge
Difficulty: Easy
(1 Mark)
Common salt is:
💡
Step-by-Step Explanation & Concept Rationale
Common table salt is an ionic compound consisting of sodium and chloride ions.
Q. 11
General Knowledge
Difficulty: Easy
(1 Mark)
Hard water does not lather well with soap because:
💡
Step-by-Step Explanation & Concept Rationale
Dissolved calcium and magnesium ions in hard water react with soap to form insoluble curds rather than lather.
Q. 12
General Knowledge
Difficulty: Easy
(1 Mark)
Water, on passing over rocks, becomes hard because it dissolves:
💡
Step-by-Step Explanation & Concept Rationale
As water flows over limestone or chalk, it dissolves calcium carbonate, which increases the mineral content and hardness of the water.
Q. 13
General Knowledge
Difficulty: Easy
(1 Mark)
The process of changing of one element into another is called:
💡
Step-by-Step Explanation & Concept Rationale
Transmutation is the conversion of one chemical element or isotope into another through nuclear reactions or decay.
Q. 14
General Knowledge
Difficulty: Easy
(1 Mark)
Chemically, baking soda is:
💡
Step-by-Step Explanation & Concept Rationale
Baking soda is a chemical leavening agent known as sodium bicarbonate, which releases carbon dioxide when reacting with acid.
Q. 15
General Knowledge
Difficulty: Easy
(1 Mark)
Laundry soap is:
💡
Step-by-Step Explanation & Concept Rationale
Traditional soap is produced through saponification, creating sodium salts from fats and oils containing higher fatty acids.
Q. 16
General Knowledge
Difficulty: Easy
(1 Mark)
Lime water contains:
💡
Step-by-Step Explanation & Concept Rationale
Lime water is a saturated aqueous solution of calcium hydroxide, commonly used to test for the presence of carbon dioxide.
Q. 17
General Knowledge
Difficulty: Easy
(1 Mark)
Pyorrhea is a disease of the:
💡
Step-by-Step Explanation & Concept Rationale
Pyorrhea, also known as periodontitis, is a severe gum infection that damages the soft tissue and can destroy the bone supporting teeth.
Q. 18
General Knowledge
Difficulty: Medium
(1 Mark)
The ratio of different gases in air is:
💡
Step-by-Step Explanation & Concept Rationale
The primary composition of the Earth's atmosphere (nitrogen and oxygen) remains relatively constant across the globe.
Q. 19
General Knowledge
Difficulty: Easy
(1 Mark)
Cooking oil can be converted into vegetable ghee by the process of:
💡
Step-by-Step Explanation & Concept Rationale
Hydrogenation involves adding hydrogen to liquid vegetable oils to make them solid at room temperature, creating vegetable ghee.
Q. 20
General Knowledge
Difficulty: Medium
(1 Mark)
Iron articles rust because of the formation of:
💡
Step-by-Step Explanation & Concept Rationale
Rusting is an oxidation process where iron reacts with oxygen and moisture to form hydrated iron oxides.
Q. 21
General Knowledge
Difficulty: Easy
(1 Mark)
Diamond is chemically:
💡
Step-by-Step Explanation & Concept Rationale
Diamond is a solid form of the element carbon with its atoms arranged in a specific crystal structure.
Q. 22
General Knowledge
Difficulty: Easy
(1 Mark)
Nitrogen in air:
💡
Step-by-Step Explanation & Concept Rationale
Atmospheric nitrogen acts as a buffer, diluting oxygen to prevent rapid combustion and supporting life-sustaining biological processes.
Q. 23
General Knowledge
Difficulty: Easy
(1 Mark)
Two solution are said to be isotonic when they:
💡
Step-by-Step Explanation & Concept Rationale
Isotonic solutions exert equal osmotic pressure across a semipermeable membrane, resulting in no net movement of water.
Q. 24
General Knowledge
Difficulty: Easy
(1 Mark)
Lack of ________ causes diabetes:
💡
Step-by-Step Explanation & Concept Rationale
Diabetes is a metabolic disease characterized by high blood sugar levels resulting from the body's inability to produce or use insulin.
Q. 25
General Knowledge
Difficulty: Easy
(1 Mark)
Cooking gas is a mixture of:
💡
Step-by-Step Explanation & Concept Rationale
Liquefied Petroleum Gas (LPG) used for cooking is primarily composed of flammable hydrocarbon gases butane and propane.
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