Daily NEET MCQ- August 19, 2022 - NEET MCQ

Helium’s electronic configuration is 1s². As the last electron is filled in s-orbital, it belongs to s-block. Since the 1^st shell cannot accommodate any orbital than s, 1s² is completely filled orbital, hence making it, a noble gas. Noble gases are placed in p-block.

The p-block elements comprise of elements from group-13 to group-18 while s-block elements are 1^st and 2nd groups. They two together form “Representative elements” or “Main group elements”.

Non-metallic nature is defined as a tendency to gain electrons thus having high negative electron gain enthalpies, but the 18th group has no reactivity. So the non-metallic nature increases from left to right in groups leaving noble gases.

Here we will use the second equation of motion, s = ut + (1/2)at². Here, u = 0, s = 3600, t = 60s. On solving, we will get a = 2 m/s².

There are primarily 3 equations of motion. These are v = u + at, s = ut + (1/2)at² and v² = u² + 2as.

Here we will use the third equation of motion. The third equation of motion is v² = u² + 2as, u = 0, a = 10, v = 5. Therefore, on solving, we get s = 1.25m.

Sporozoans are non-mobile and therefore don’t have cilia. They are mostly parasitic and depend on host to meet their food requirements. They reproduce by spore formation.

Trypanosoma is a flagellated protozoan that is parasitic and causes sleeping sickness. Sleeping sickness causes joint and muscle pains. It results in behavioural changes, confusion and poor coordination.

Movement in paramecium is due to hair like structures called cilia that grows on its body. Paramoecium can move actively due to the presence of thousands of cilia. Cilia performs rhythmic movement in order to steer food containing water into the gullet.

Entamoeba hystalica is a parasitic amoeba in human which in turn causes Amebiasis. Amebiasis results in abdominal pain, diarrohoea, blood in stool, fever and loss of appetite.