Daily NEET MCQ- May 10, 2022 - NEET MCQ

Two bodies collide in the absence of any external force. In this case the momentum will remain constant because there is no force, hence, there is no change in momentum. The velocity and speed of the bodies might change after collision.

The body is moving in the absence of any external force thus the momentum remains conserved. m₁v₁ = m₂v₂. v₁ = 5 m/s, m₁ = 5 Kg, v₂ = 10 m/s. On solving, we get, m₂ = 2.5 kg. Hence, the correct answer is 2.5 Kg.

Both the bodies are moving with constant velocity, hence both of them have momentum. The momentum of the system is the sum of the momenta of the bodies. Hence total momentum = 2 x 2 + 7 x 7 = 53 Kg-m/s.

If K_C > 10x, the products are predominant, over the reactants in a chemical reaction because if K_C is very large the reaction proceeds nearly to completion an example for this is at 300K, H_2(g) + Cl_2(g) ⇌ 2HCl_(g), K_C = 4 x 10³¹.

If the reaction quotient is less than the equilibrium constant K_C, the reaction quotient will tend to increase and the reaction will proceed in the forward direction, till it reaches the value of the equilibrium constant.

We know that reaction quotient Q_c = [HI]t² / [H₂]t[I₂]t and given that [H₂]t=0.10 M, [I₂]t = 0.20 M and [HI]t = 0.40 M, So by substituting, we get Q_c = (0.40 M x 0.40 M)/(0.20 M x 0.10 M) = 8.0, 8 is the answer.

The inactive enzymes of the pancreas are trypsinogen, procarboxypeptidase and chymotrypsinogen. The other pancreatic enzymes include amylases, lipases and nucleases.

Nucleases are not present in the bile as this enzyme is the secretion of the pancreas. The bile released into the duodenum contains bile pigments like bilirubin and biliverdin, bile salts, cholesterol and phospholipids. No enzyme is present in the bile juice.

The nucleases in the pancreatic juice acts in nucleic acids to form nucleotides and nucleosides which are further broken down by nucleosidases to sugars and nitrogen bases.

Heat is the ultimate form of energy and that is why the energy requirements of animals, and the energy content of food, are expressed in terms of a measure of heat energy.