Define toxicity?
(A) A chemical reaction
(B) A process used in the manufacturing of detergents
(C) A harmful effect of soaps and detergents required to measure the effectiveness.
(D) A process used in the manufacturing of soaps
The extent to which something is poisonous or harmful.
Which of the following compounds is not used as an alkali?
(A) Sodium hydroxide
(B) Potassium hydroxide
(C) Carbon hydroxide
(D) Nitrogen hydroxide
Expert-Verified AnswerNitrogen hydroxide is not used as an alkali as it is an acid. The other name of Nitrogen hydroxide is Nitric acid.
Detergent is defined as.....
(A) A liquid surfactant
(B) A liquid soluble
(C) A liquid sovent
(D) A liquid solution
Detergent can be defined as a surfactant or a mixture of surfactants with cleansing properties when in dilute solutions. However, conventionally, detergent is used to mean synthetic cleaning compounds as opposed to soap (a salt of the natural fatty acid), even though soap is also a detergent in the true sense.
Tell the composition of soap.
(A) Sodium salt with fatty acids.
(B) Potassium salt with fatty acids
(C) Both a & b
(D) Sodium and Potassium salt mixed with chemicals
Soaps are defined as salts of fatty acids, which are prepared by neutralizing the corresponding fatty acid or oil with a base, such as sodium hydroxide, potassium hydroxide, ammonium hydroxide or triethylamine.
Biochemical compounds are used as....
(A) Skin Treatments
(B) Food preservatives
(C) Cooking Oils
(D) All of the above
The biochemical compound is any compound that contains carbon and is found in living things. It is involved in every process of life i.e growth of the human body, digestion of food, respiration, etc. Bio-chemical compounds are used in skin treatments, food preservatives, and cooking oils.
By which reason it is not advisable to sleep under a tree at night?
(A) Release of less oxygen
(B) Release of more oxygen
(C) Release of carbon dioxide
(D) Release of carbon monoxide
Sleeping under a tree is not advisable at night, since photosynthesis does not occur, oxygen is not being produced by the trees. In addition to this, the trees continue respiring thereby causing the amount of carbon dioxide to be increased and the amount of oxygen to be reduced.
What is the averages rate of the heart beats (per minute) in an adult?
(A) 60
(B) 72
(C) 84
(D) 96
A normal resting heart rate for adults ranges from 60 to 100 beats per minute. Generally, a lower heart rate at rest implies more efficient heart function and better cardiovascular fitness.
Which of the following is the volume of urine produced in an adult human every 24 hours?
(A) 1 litre
(B) 1.5 litres
(C) 3.0 litres
(D) 5.0 litres
The normal range for 24-hour urine volume is 800 to 2,000 milliliters per day (with a normal fluid intake of about 2 liters per day). The examples above are common measurements for results of these tests. Normal value ranges may vary slightly among different laboratories.
Which of the following pigment causes eye colour of person (brown eyes, blue eyes or black eyes)?
(A) Cornea
(B) Choroid
(C) Iris
(D) Vitreous body
Eye color is directly related to the amount of melanin in the front layers of the iris. People with brown eyes have a large amount of melanin in the iris, while people with blue eyes have much less of this pigment.
Which of the following led to the expulsion of milk from the breast during suckling?
(A) Prolactin
(B) Oxytocin
(C) Vasopressin
(D) Estrogen and Progesterone
Oxytocin is an oligopeptide hormone secreted by pars nervosa of pituitary glands of birds and mammals and is involved in contraction of alveoli of mammary glands during release of milk.
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