General Science - Online Test
Q1. The fusion of two polar nuclei with one male gamete is called
Answer : Option D
Explaination / Solution:
The process of fusion of two polar nuclei with one male gamete is called as triple fusion. The resulting cell becomes primary endosperm cells that forms endosperm.
Q2.
In constructing a large mobile, an artist hangs an aluminum sphere of mass 6.0 kg from a vertical steel wire 0.50 m long and 2.5 in cross-sectional area. On the bottom of the sphere he attaches a similar steel wire, from which he hangs a brass cube of mass 10.0 kg. Compute the tensile strain.
Answer : Option A
Explaination / Solution:
No Explaination.
Q3. Population ecology makes link with
Answer : Option D
Explaination / Solution:
Population ecology is an important area of ecology because it links ecology to population genetics and evolution. At population level natural selection operates to evolve desired traits.
Q4. Influx and efflux of H+ ions inside the cell change the
Answer : Option D
Explaination / Solution:
pH of a solution is depends upon hydrogen ions concentration. Influx and efflux of H+ ions inside the cell change the pH of solution present in soil.
Q5.
In elephant and walrus, projecting tusks are :
Answer : Option B
Explaination / Solution:
The projecting tusk of elephant and walrus are incisors and canines respectively. These teeth are not used for chewing food.
Q6. The normative economic analysis deals with the variables
Answer : Option A
Explaination / Solution:
Normative economic analysis refers to the analysis in which we study whether a particular mechanism is desirable or not. In this analysis, we study what ought to be the desired situation or in what ways the economic problems should be solved. In other words, it is concerned with what should be and what should not be, and what is desirable and what is not?
Q7. An observer looks at a tree of height 15 metre with a telescope of magnifying power 10. To him, the tree appears
Answer : Option B
Explaination / Solution:
No Explaination.
Q8. The drug which binds to specific opioid receptors present in our central nervous system and gastrointestinal tract is
Answer : Option D
Explaination / Solution:
Opioids are substances that act on opioid receptors to produce morphine-like effects.
The endogenous opioids are dynorphins, enkephalins, endorphins, endomorphins and nociceptin. The opioid receptors are ~40% identical to somatostatin receptors (SSTRs). Opioid receptors are distributed widely in the brain, and are also found in the spinal cord and digestive tract.
Opioids are most often used medically to relieve pain, and by people addicted to opioids.
Q9. Television pictures result due to
Answer : Option B
Explaination / Solution:
Cathode rays (also called an electron beam or e-beam) are streams of electrons observed in vacuum tubes. If an evacuated glass tube is equipped with two electrodes and a voltage is applied, the glass behind of the positive electrode is observed to glow, due to electrons emitted from and traveling away from the cathode (the electrode connected to the negative terminal of the voltage supply).
Cathode ray tubes (CRTs) use a focused beam of electrons deflected by electric or magnetic fields to create the image in a television set
Q10. Part of brain that acts as relay centre to receive and transmit general sensations except smell :
Answer : Option C
Explaination / Solution:
Thalamus is the part of brain that acts as relay centre to receiveand transmit general sensations except smell. Thalamus is located in the forebrain superior to the midbrain.
