Which one of the following statements is true regarding digestion and absorption of food in humans?

Chylomicrons are small lipoprotein particles that are transported from intestine into blood capillaries

Oxyntic cells in our stomach secrete the proenzyme pepsinogen

Fructose and amino acids are absorbed through intestinal mucosa with the help of carrier ions like $N{a^ + }$

The correct Option is "Chylomicrons are small lipoprotein particles that are transported from intestine into blood capillaries"

About 60% of starch is hydrolysed by salivary amylase in our mouth

Which one of the following statements is true in respect of usual quantities represented by$\Delta Q,\Delta U$and $\Delta W$

Internal energy$\left( {\Delta U} \right)$ does not depend upon path. It depends only on initial and final states

$\Delta U$ and $\Delta W$ are path dependent

$\Delta Q$ and $\Delta U$ are path dependent

The correct Option is "$\Delta U$ does not dependent on path"

$\Delta Q$does not depend upon path

Which one of the following statements is true for the speed v and the acceleration a of a particle executing simple harmonic motion

${\rm{In}}\,\,\,{\rm{S}}{\rm{.H}}{\rm{.M}}{\rm{.}}\,\,\,v = \omega \sqrt {{a^2} - {y^2}} $ and $a = - {\omega ^2}y$ when $y = 0 \Rightarrow {\upsilon _{\max }} = a\omega \,\,\,{\rm{and}}\,\,{a_{\min }} = 0$

When v is maximum, a is maximum

Value of a is zero, whatever may be the value of v

The correct Option is "When v is maximum, a is zero"

Which one of the following statements is true for all the alkali metals?

Alkali metals react with halogen to give halides. They are normally represented by ${M^ + }{X^ - }$.

Their nitrates decompose on heating to give ${\rm{N}}{{\rm{O}}_2}{\rm{and}}{{\rm{O}}_2}{\rm{.}}$

Their carbonates decompose on heating to give ${\rm{C}}{{\rm{O}}_2}$ and the metal oxide.

They react with oxygen to give mainly the oxide ${{\rm{M}}_2}{\rm{O}}$.

The correct Option is "They react with halogens to give the halides $MX.$"

Which one of the following statements is true

Light waves are electromagnetic waves. Light waves are transverse in nature and do not require a medium to travel, hence they can travel in vacuum. Sound waves are longitudinal waves and require a medium to travel. They do not travel in vacuum

Both light and sound waves in air are longitudinal

Both light and sound waves can travel in vacuum

Both light and sound waves in air are transverse

The correct Option is "The sound waves in air are longitudinal while the light waves are transverse"

Which one of the following statements is true

Virtual image is seen on the photograph

An object situated at the principle focus of a concave lens will have its image formed at infinity

Concave mirror can give diminished virtual image

Given a point source of light, a convex mirror can produce a parallel beam of light

The correct Option is "The virtual image formed in a plane mirror can be photographed"

Which one of the following statements is true?

Saponification of oils yields a triol (glycerol). Drying (hardening) ofoils involves hydrogenation. Refining of oil is done by distillation or other such processes but not by hydrogenation. Antioxidant are added to prevent the oxidation of oil, thus they minimizes rancidity.

Saponification of oil yields a diol

Drying of oil involves hydrolysis

The correct Option is "Addition of antioxidant to oil minimizes rancidity"

Refining of oil involves hydrogenation

The post anal tail is present in

All members of the phylum-Chordata exhibit the following four characteristic features - presence of dorsal nerve cord, the notochord, postanal tail and pharyngeal slits. The post anal tail is a muscular region of the body that extends beyond the anus. It includes skeletal support and musculature that improves the locomotion of many aquatic chordate species.

The correct Option is "Chordates"

Which sense organ is related with maintenance of body position in response to rotational acceleration?

Macula are associated with static balance of body.

The correct Option is "Crista ampularis"

Which portion of the human respiratory system is called sound box?

Larynx is a cartilaginous box, which helps in sound production and hence called sound box. Until puberty, there is a little difference in the size of larynx (sound box) in males and females. Thereafter, it grows larger and become prominent in males. Therefore, it is called Adam’s apple in man. It is the first part of the trachea present in the neck

Mollusca are terrestrial or aquatic, present both in freshwater and marine water

The correct Option is "Aquatic or terrestrial"

Match the of source gland with its respective hormone as well as its function and choose the correct option.

Neurohypophysis (Pars nervosa) also known as posterior pituitary, stores and releases two hormones called oxytocin and vasopressin, which are actually synthesized from the hypothalamus and are transported axonally to neutophypophysis. ACTH is released by adenohypophysis. ACTH stimulates adrenal cortex of suprarenal gland.

Hypothalamus controls I. urge for eating and drinking II. thermoregulation III. hormones production that regulates the secretion of pituitary gland IV. creative thinking and consciousness

The hypothalamus contains a number of centres which control body temperature, urge for eating and drinking. It also contains several groups of neurosecretory cells, which secretes hormones called hypothalamic hormones

The correct Option is "I, II and III are correct"

${\rm{C}}{{\rm{O}}_2}$ dissociates in alveoli from carbohaemoglobin when

Carbohaemoglobin dissociates in the alveoli, where there is high ${{\rm{O}}_2}$ partial pressure and low $\rho {\rm{C}}{{\rm{O}}_2}$. Due to the pressure gradient, ${\rm{C}}{{\rm{O}}_2}$ dissociates from the haemoglobin and ${{\rm{O}}_2}$ combines to from oxyhaemoglobin