General Science - Online Test
Q1.
What does the chart given below represent?
Answer : Option D
Explaination / Solution:
The chart given below represent XX-XO type of sex determination in which XX forms the female and XO develops as male. It is common in birds.
Q2. The break- even point is where MR=MC
Answer : Option C
Explaination / Solution:
No Explaination.
Q3. Which kingdoms among the living organism contain only micro-organisms?
Answer : Option C
Explaination / Solution:
Monera and Protista contain only micro-organisms. Monera contains unicellular prokaryotic organisms like bacteria. Protista contains unicellular eukaryotic organisms.
Q4. The species having pyramidal shape is
Answer : Option B
Explaination / Solution:
SF2O has pyramidal shape as it is sp3 hybridised and it has 3bp and 1 lp.
Q5. Two ends of a horizontal conducting rod of length l are joined to a voltmeter. The whole arrangement moves with a horizontal velocity v, the direction of motion being perpendicular to the rod. Vertical component of the earth's magnetic field is B. The voltmeter reads
Answer : Option C
Explaination / Solution:
Induced EMF is zero because flux linked with it remains constant.
Q6. Part of the electromagnetic spectrum to which 2.7 K [temperature associated with the isotropic radiation filling all space-thought to be a relic of the ‘big-bang’ origin of the Universe] belongs is
Answer : Option A
Explaination / Solution:
No Explaination.
Q7. Ozone depletion shall cause higher incidence of
Answer : Option D
Explaination / Solution:
The depletion of ozone layer allows entering of UV rays from sun into the earth’s atmosphere which is associated with a number of health related and environmental issues.
Skin Cancer: exposure to UV rays from sun can lead to increased risk for developing of several types of skin cancers. Malignant melanoma, basal and squamous cell carcinoma are the most common cancers caused by exposure to UV rays.
Eye Damage: UV rays are harmful for our eyes too. Direct exposure to UV rays can lead to Cataract problems, and also Photokeratitis or snow blindness.
Damage to Immune system: our immune system is also highly vulnerable to UV rays. Increased exposure to UV rays can lead to weakening of the response of immune system and even impairment of the immune system in extreme cases.
Q8. A dibromo derivative of an alkane reacts with sodium metal to form an alicyclic hydrocarbon. The derivative is
Answer : Option D
Explaination / Solution:
This is intramolecular wurtz reaction.
Q9. Printer resolutions are measured in
Answer : Option B
Explaination / Solution:
No Explaination.
Q10. During anaerobic respiration less energy is produced than aerobic respiration because
Answer : Option A
Explaination / Solution:
During anaerobic respiration, incomplete oxidation of glucose takes place but during aerobic respiration complete oxidation of glucose occurs in which less energy is produced.
