General Science Quiz with Answers

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.

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.

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.

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.

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.

Urethanes. As a vegetable preservatives poly urethanes form is used .

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 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.

The extent to which something is poisonous or harmful.

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.