General Science - Online Test
Q1. Charge on the electron was determined by
Answer : Option C
Explaination / Solution:
In 1909, Robert Millikan and Harvey Fletcher conducted the oil drop experiment to determine the charge of an electron. They suspended tiny charged droplets of oil between two metal electrodes by balancing downward gravitational force with upward drag and electric forces.
The experiment helped earn Millikan a Nobel prize in 1923
Q2. Examples of artificial ecosystem is/are:
Answer : Option A
Explaination / Solution:
Artificial ecosystems are man-made ecosystem. Crop field and aquarium are examples of artificial ecosystem as they are man-made.
Q3. Micronutrients are otherwise called as
Answer : Option D
Explaination / Solution:
Micronutrients or trace elements, are needed in very small amounts(less than 10 mole Kg –1 of dry matter). These include iron, manganese, copper, molybdenum, zinc, boron, chlorine and nickel.
Q4. Brunner’s gland is
Answer : Option B
Explaination / Solution:
Brunner’s glands are submucosal mucin secreting glands localized predominantly in the duodenal bulb and proximal duodenum, decreasing progressively in size and number in the distal portions.
Sub-mucosal glands (Brunner’s glands) provide alkaline medium.
Q5. Focal length of a mirror is given by
Answer : Option B
Explaination / Solution:
No Explaination.
Q6. Alzheimer disease in humans is associated with the deficiency of
Answer : Option D
Explaination / Solution:
Alzheimer disease is a neurological disorder in which the death of brain cells causes memory loss and cognitive decline. It is caused in human due to deficiency of acetylcholine.
Q7. In Atmosphere nitrogen consists of;
Answer : Option D
Explaination / Solution:
No Explaination.
Q8. Hypothalamus helps to maintain homeostasis by controlling hunger, thirst, blood pressure, temperature feelings etc. So it is an important link between
Answer : Option D
Explaination / Solution:
One of the most important functions of the hypothalamus is to link the nervous system to the endocrine system via the pituitary gland (hypophysis). The hypothalamus is located below the thalamus and is part of the limbic system
Q9. 180 equal intervals between two reference points on Fahrenheit scale correspond to
Answer : Option B
Explaination / Solution:
ΔTC100=ΔTF180
Q10. In short run which of the following factors can be changed easily
Answer : Option C
Explaination / Solution:
No Explaination.
