QI. Choose the appropriate answer.

Soaps were originally made from__________.
1. Proteins
2. Animal fats and vegetable oils
3. Chemicals extracted from the soil
4. Foam booster
The saponification of a fat or oil is done using __________ solution for hot process.
1. Ammonium hydroxide
2. Sodium hydroxide
3. Hydrochloric acid
4. Sodium chloride
Gypsum is added to the cement for ________.
1. fast setting
2. delayed setting
3. hardening
4. both b and c
Phenol is________.
1. carbolic acid
2. acetic acid
3. benzoic acid
4. hydrochloric acid
Natural adhesives are made from____________.
1. Protein
2. Fat
3. Starch
4. Vitamins
Used to fix bone fractures.
1. Plaster of Paris
2. Epsom
3. Gypsum
4. Adhesives
Why we get tears in the eyes with irritation while cutting onions? due to presence of_____________.
1. Capsaicin
2. Lycopene
3. Propanethial s-oxide
4. Glucose
What is the chemical formula of gypsum?
1. CaSO4. 1/2H2O
2. CaSO4 . 2H2O
3. MgSO4
4. C17H35COOH
In which year Joseph Aspdin invented Portland cement by burning finely ground chalk and clay in a kiln?
1. 1834
2. 1823
3. 1824
4. 1826
Crushing of naturally occuring minerals such as lime, clay and gypsum is known as__________.
1. Fertilizers
2. Epsom
3. Adhesive
4. Cement
____________ are know as Farmer's friends.
1. Earthworms
2. Cutworm
3. Beetles
4. Crickets
The three Principal Nutrients are
1. Nitrogen ,Phosphorous ,potassium
2. Protein, Vitamin C , minirals
3. Fish oil, Vitamin D, Vitamin A
4. Carbohydrates, fibres, water
Calcium sulphate hemihydrate is known as
1. Epsom
2. Phenol
3. Plaster of paris
4. Gypsum
Used in the process of making Cement
1. Adhesives
2. Epsum
3. Plaster of paris
4. Gypsum
Urea is an example of ___________.
1. Organic fertilizers
2. Epsom
3. Vermi compost
4. Inorganic fertilizers
____________ is an example for natural adhesive.
1. Pellets
2. Tape
3. Paste
4. Starch
Urea: Inorganic fertilizer
Vermi compost:__________
1. Artificial adhesive
2. Natural adhesive
3. Organic fertilizer
4. Detergent
Water, Coconut oil and__________are necessary for soap preparation
1. GYPSUM
2. LYE
3. EPSOM
4. SEEDS
LYE is also know as
1. Sodium hydroxide
2. Sodium chloride
3. Sodium Sulphate
4. SOdium peroxide
Which substance is considered as natural indicator
1. Coca powder
2. Chilli powder
3. Coconut
4. Tumeric powder
Burning of paper is a__________.
1. Reactive change
2. Physical change
3. Chemical change
4. Incremental change
Helps the materials fixing it up together is known as_________.
1. Adhesives
2. Cement
3. Soap
4. Epsom
MgSO4.7H2O also known as
1. Plaster of paris
2. Phenol
3. Epsom
4. Gypsum
_________ are used in medicine for skin problems.
1. Epsom
2. Gypsum
3. Plaster of Paris
4. Organic fertilizer
______________ has high nutrient benefits and it is useful for sustaining the land fertility.
1. Inorganic fertilizer
2. Sodium hydroxide
3. Vermi compost
4. Adhesives
___________ is used as cleaner, disinfectant and mouthwash.
1. Conc. Phenol
2. Diluted Phenol
3. Sodium Hydroxide
4. Epsom
Urea,Ammonium Sulhate are example of___________.
1. Plaster of Paris
2. Organic fertilizer
3. Gypsum
4. Inorganic Fertilizer
How much nitrogen content is in Ammonium Sulphate.
1. 46%
2. 0%
3. 21%
4. 13%
Cement invented by Joseph Aspdin.
1. London, England
2. Portland, England
3. Bath, England
4. Oxford, English
Which type of cement is used in construction of buildings, bridges and dams.
1. Mortar
2. Reinforced cement concrete
3. B&D
4. Concrete

QI. Choose the appropriate answer.

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