NEET Practice Questions (MCQs) with Answers & Solutions

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And R type question option for question number Statement (A) : In human 12 pairs of ribs are present. Reason (R) : The ribs have two articulation surfaces it is called bicephalic.

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And R type question option for question number Statement (a) : The anterior region go glenoid cavity and humerus joint form joint of shoulder. Reason (R) : The joint of shoulder is ball and socket joint.

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Explanation

The glenoid cavity of the scapula and the head of the humerus form the shoulder joint, which is indeed a ball and socket joint. Thus, both statements A and R are true, and R is the correct explanation for A.

And R type question option for question number Statement (a) : The joints of skull are immovable. Reason (R) : The bones of skull are joint with each other by strong collagen fibers.

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Explanation

The joints in the skull are immovable, known as sutures, and they are joined together by strong collagen fibers. Hence, both statements A and R are true, and R is the correct explanation for A.

Which micro-organism are useful in fermentation of dough for the idli and dosa ?

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Explanation

Fermentation of dough is an anaerobic process which take place in presence of bacteria.

Which is useful to obtain ace acetic acid?

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Explanation

Acetobacter aceti is a bacterium that is widely used in the industrial production of acetic acid, which is the main component of vinegar. This microorganism oxidizes ethanol to acetic acid.

Which is one correct for the amino acid?

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Which is useful to remove the oily stains in laundry?

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Explanation

Lipase is an enzyme that breaks down fats into glycerol and free fatty acids. It is commonly used in laundry detergents to remove oily stains by breaking down the fat molecules in the stain.

Which one correct option for fermentation?

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Which is useful to remove weeds in agriculture?

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Explanation

Weedicides are chemicals specifically designed to kill unwanted plants, commonly known as weeds. They are used in agriculture to manage and reduce the competition weeds pose to crops, thereby enhancing crop yield and quality.

Which metabolic process is performed by bacteria in biogas plant?

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Explanation

In a biogas plant, bacteria perform anaerobic respiration. This process involves breaking down organic material in the absence of oxygen to produce biogas, which is primarily composed of methane and carbon dioxide. Anaerobic respiration is crucial for the production of biogas from waste materials.

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