General Science - Online Test
Q1. Genotype is the
Answer : Option A
Explaination / Solution:
Genotype is the genetic combination of an individual. TT and Tt are genotypically different but phenotypically appear tall.
Q2. Which of the following is the correct IUPAC name?
Answer : Option A
Explaination / Solution:
While writing IUPAC name, alkyl groups are written in alphabetical order. thus lower locant 3 is assigned to ethyl. prefix di, tri or tetra are not included in alphabetical order
Q3. Respiration is
Answer : Option B
Explaination / Solution:
Catabolism is process of break down of any large substance into smaller ones. In respiration, glucose is broken down into carbon dioxide and water molecules. Thus it is referred to as a catabolic reaction
Q4.
Oxidation and reduction always occur simultaneously, hence, the word “redox” was coined for this class of chemical reactions. In the following redox reaction, identify the species undergoing oxidation and reduction:
Answer : Option C
Explaination / Solution:
In the above reaction oxygen is transferred from Fe3O4 to Al, so Fe3O4 is reduced while Al is oxidised.
As per definition of oxidation and reduction , loss of oxygen i.e reduction occurs in Fe3O4 and gain of oxygen i.e Oxidation occurs in Al.
Q5. Group IlA of the periodic table consists of the six elements are collectively known as
Answer : Option A
Explaination / Solution:
because their oxide and hydroxide are alkaline in nature and these metal oxide are found in earth's crust
Q6. The puffed-up appearance of dough is due to production of
Answer : Option B
Explaination / Solution:
The puffed-up appearance of dough is due to production of gas. Baking soda (sodium hydrogen carbonate) on heating release carbon dioxide gas along with sodium carbonate.
Q7. In rotation of a rigid body about a fixed axis is that in which
Answer : Option A
Explaination / Solution:
When a rigid body rotates about a fixed axis, all particles of the body except those which lies on the axis of rotation, move along circular paths in a plane perpendicular to the axis.
Q8.
When current carrying coil is moved towards the coil connected in series with a galvanometer, the pointer in the galvanometer G
Answer : Option C
Explaination / Solution:
current induced due to flux changed when C2 is in motion .
Q9. Photoelectric effect is
Answer : Option B
Explaination / Solution:
When the light strikes on a metal surface, electrons on the surface of the metal get energy from the light and get emitted from the surface. It is found that there will be no photoemission from a metal surface below a certain frequency of light. The phenomenon of emission of photoelectron from a metal surface by light of suitable frequency is called photoelectric effect.
Q10. The scientific method is
Answer : Option A
Explaination / Solution:
The scientific method is a body of techniques for investigating phenomena, acquiring new knowledge, or correcting and integrating previous knowledge. To be termed scientific, a method of inquiry is commonly based on empirical or measurable evidence subject to specific principles of reasoning.
