SAT (Stage-2) Mock Test - 9

The elements belongs to the 3^rd period and have 3 shells. The electronic configuration of given elements is:

A (Z = 18) = 2, 8, 8
B (Z = 17) = 2, 8, 7
C (Z = 12) = 2, 8, 2
D (Z = 11) = 2, 8, 1

Thus, all the given elements belong to the 3^rd period; but out of these, element A has the highest ionisation potential as when we move from left to right, the ionisation energy increases because nuclear charge increases due to addition electrons of into the same shell.

Compounds of carbon are classified as organic when carbon is bound to hydrogen. Carbon compounds such as carbides (e.g. silicon carbide [SiC₂]), some carbonates (e.g. calcium carbonate [CaCO₃]), some cyanides (e.g. sodium cyanide [NaCN]), graphite, carbon dioxide, and carbon monoxide are classified as inorganic.

Copper does not react with steam because it is one of the most non-reactive metals.

During electrolysis of water, hydrogen is obtained at the cathode. It is a fuel and has atomic number 1.
Oxygen is obtained at the anode. It is a supporter of combustion and has atomic number 8.

Among the given options, lysosomes and centriole are mainly present in animal cells but absent in plant cells. Most of the work done by animal lysosomes is done by plant vacuoles.

Cutin is a waxy coating found on the epidermis and provides resistance to water.

The largest cranial nerve in human beings is the trigeminal nerve. It has three major branches: the ophthalmic nerve (V1), the maxillary nerve (V2) and the mandibular nerve (V3).

Chewing is a voluntary action, not a reflex action. Through the process of mastication or chewing, teeth physically break down the tough tissues of meats and fibres of plants into smaller particles.

Notochord is a characteristic feature of protochordates. This group is composed of the phylum Hemichordata and the subphyla Urochordata and Cephalochordata.

Among these, Archaeopteryx is an extinct animal. It is a genus of bird-like dinosaurs that is transitional between non-avian feathered dinosaurs and modern birds.

Four important mineral nutrients required in large quantities by humans are phosphorus, calcium, sodium and magnesium. Dietitians may recommend that dietary elements are best supplied by ingesting specific foods rich with the chemical element(s) of interest.

Acetyl-CoA is not formed during anaerobic respiration. Anaerobic respiration is a form of respiration using electron acceptors other than oxygen.

Raising of plants from a small tissue in culture is called micropropagation. It is used to multiply novel plants, such as those that have been genetically modified or bred through conventional plant breeding methods.