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 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.
Where does fertilization occur in the female?
(A) Fallopian tube
(B) Uterus
(C) Cervix
(D) Vagina
Fertilization usually takes place in a fallopian tube that links an ovary to the uterus. If the fertilized egg successfully travels down the fallopian tube and implants in the uterus, an embryo starts growing.
What proportion of children is likely to be colour blindness when their parent (mother has normal vision & father has colour-blindness)?
(A) 0 per cent
(B) 25 per cent
(C) 50 per cent
(D) 100 per cent
So, the correct answer is '50%'. A normal woman whose father was colour blind marries a colourblind man. What percentage of girls born to these parents would be colourblind. A sex linked recessive gene 'C' produces red green colour blindness in humans.
Which of the following properties of light can be used to explain the phenomenon of shadow formation?
A. Light travels in a straight line.
B. Light travels at a high speed.
C. Light is composed of seven colours.
D. Light does not pass through opaque objects.
(A) A and B
(B) B and C
(C) C and D
(D) D and A
The reflected light reaches our eyes and make that thing visible to us. Luminous objects like Sun, stars, electric bulbs etc have their own light and they are considered a source of light. Non Luminous objects are those objects which do not have their own light but reflect the light coming from some source.
As a vegetable preservative poly______ foam is used.
(A) Uthane
(B) Uriathenes
(C) Urathanes
(D) Urethanes
Urethanes. As a vegetable preservatives poly urethanes form is used .
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.
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.
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.
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.
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