General Science - Online Test
Q1. If a charge moves in an electrical field
Answer : Option C
Explaination / Solution:
Ambiguous question. Energy may be gained or lost depending on the sign of the charge and the electric field. It can also remain unchanged if the charge moves perpendicular to the direction of the field.
Q2. Some carrier proteins allow diffusion by both molecules cross the membrane in the same direction is
Answer : Option B
Explaination / Solution:
Some carrier or transport proteins allow diffusion only if two types of molecules move together. In a symport, both molecules cross the membrane in the same direction.
Q3. Cellulose, starch, resins and rubber belong to one of the following category of polymers
Answer : Option D
Explaination / Solution:
They all are natural polymers.
Q4. The most common oxidation states of nitrogen are
Answer : Option C
Explaination / Solution:
N shows -3 in NH3 , +3 in HNO2 and +5 in HNO3 .
Q5. In an open system, which if the following take place ?
Answer : Option B
Explaination / Solution:
In open system there is flow of matter and energy in and out of the system or vice versa.
For example, an air compressor in which the air enters at a low pressure and exit at high pressure and there is energy interaction with the surrounding
Q6. The specific gravity of a material is
Answer : Option C
Explaination / Solution:
The specific gravity of an object is the ratio between the density of an object to a reference liquid. Usually, this reference liquid is water, which has a density of 1 g/mL or 1 g/cm3.
Water has a specific gravity equal to 1. Materials with a specific gravity less than 1 are less dense than water, and will float on the pure liquid; substances with a specific gravity more than 1 are more dense than water, and will sink.
Q7. The epithelium involved in diffusion is
Answer : Option D
Explaination / Solution:
The squamous epithelium is made of a single thin layer of flattened cells with irregular boundaries. They are found in the walls of blood vessels and air sacs of lungs and are involved in functions like forming a diffusion boundary.
Q8. In five kingdom of classification, Whittaker assigned eukaryotes to
Answer : Option D
Explaination / Solution:
In Whittaker’s five kingdom of classification, kingdom protista, kingdom fungi, kingdom plantae and kingdom Animalia are eukaryotic organisms. The kingdom monera include prokaryotic organisms.
Q9. In which major economic decisions (what to produce, how to produce and for whom to produce) are left to the free play of the market forces
Answer : Option B
Explaination / Solution:
Capitalist economy is the economy controlled by free play of market forces. Under such economics structure the sole focus of the producer is to earn maximum benefit. Social welfare is not awarded any concern, the only motive of such economy is maximum benefit or profit earning.'
Q10. Glucocorticoids regulate metabolism of :
Answer : Option D
Explaination / Solution:
The name glucocorticoid (glucose + cortex + steroid) is composed from its role in regulation of glucose metabolism, synthesis in the adrenal cortex, and its steroidal structure.
The principal glucocorticoid hormone is cortisol, which regulates the metabolism of proteins, carbohydrates, and lipids.
