Sindh MCAT NTS 2015 LUMHS

The diagram shows a section through the human brain:What are the names of the parts labelled 1, 2 and 3?

The following are all parts of the heart that control the heart action. The following are all parts of the heart that control the heart action.1. Purkinje tissue2. Sinoatrial node (SAN)3. Atrioventricular node (AVN)Which option corresponds correctly to Atrial and Ventricular contraction?

What is a characteristic of all catalysts?

The pancreas is stimulated to secrete its digestive enezyme by;

Lamarcks theory is based on all of the follwoing points EXCEPT:

The gland that responds to external conditions of light and darkness as sensed through the eyes is:

Pheretima posthuma is the scientific name of:

The floral formula of family rosacea or rose family is:

In which of the following cell organelles can you find high concentrations of RNA?1. Endoplasmic reticulum2. Golgi Apparatus3. Ribosomes 4. Mitochondria

Which nucleic acid bases are pyrimidine?

Nociceptors are specialized for the detection of sense of:

A tadpole’s tail is gradually broken down during metamorphosis into an adult frog. Which organelle increases in number in the cells of the tail at this time?

Which explains why Phenylketonuria has not been eradicated?

Which row describes the shoulder joint of an arm?

Right atrium is seperated from right ventricle by:

Which row correctly shows structures which contain a nucleus?

The diagram shows the teeth of the lower jaw of a human. Which tooth is an incisor?

Which of the follwoing is different from the others:

A person with emphysema must consciously contract muscles in order to breathe out. What makes his muscle contraction necessary?

The diagram shows two pairs of homologous chromosomes. Which stage of nuclear division is shown?

The nuclei of both plant and animal cells contain one or more dense bodied known as nucleoli. Which one of the following correct describes the function of nucleoli?

By which process does oxygen pass out of the stem and root of a plant?

Organisms of which of the following kingdoms have absorptive modes of nutrition?

Which of the following types of mammalian cell does not carry out oxidative phosporylation?

The blastoderm in chicks splits into;

For the impulse to transfer from presynaptic to post-synaptic neuron, the substance required is:

Which of the following statements is true about the desert ecosystem?

Occasionally, non-disjunction of the entire genome occurs during meiosis producing abnormal gametes. Which type of genetic variation may result when one such gamete is fertilised by a normal gamete?

Tay-Sachs disease occurs when cells are unable to produce an enzyme, leading to a build up of certain lipids in cells. Which cell structure would not function correctly, resulting in the disease?

How does sucrose move from chloroplasts to the phloem?I. apoplast pathwayII. symplast pathwayIII. mass flow

The combustion analysis of an organic compound shows it to contain 65.44% carbon, 5.5% hydrogen and 29.06% oxygen. If the molecular mass of this compound is 110.5 g.mol-1. Calculate the molecular formula of the compound.

250 cm3 of hydrogen is cooled from 127˚C to -27˚C by keeping the pressure constant. Calculate the new volume of the gas at low temperature.

A sample of nitrogen gas is enclosed in a vessel of volume 380 cm3 at 120˚C and pressure of 101325Nm2 . This gas is transferred to a 10 dm3 and cooled to 27˚C. Calculate the pressure in Nm-2 exerted by the gas at 27˚C.

The structure is H2SO4:

Which of the following statements is not correct for an electron that has the quantum numbers n=4 and m=2?

250 cm3 of the sample of hydrogen effuses four times as rapidly as 250 cm3 of an unknown gas. Calculate the molar mass of unknown gas.

N2 and H2 combine to give NH3. The value Kc in the reaction at 500˚C is 6.0 x 102. Calculate the value of Kp for this reaction.

The following reaction was allowed to reach the state of equilibrium:2A(aq) + B(aq) ⇌ C(aq)The initial amounts of the reactants present in one dm3 of solution were 0.50 mole of A and 0.60 moles of B. At equilibrium, the amounts were 0.20 moles of A and 0.45 mole of B and 0.15 mole of C. Calculate the equilibrium constant Kc.

Titanium has the electronic structure, 1s2, 2s2, 2p6, 3s2, 3p6, 3d2, 4s2.Which of the following compounds is unlikely to exist?

The structures of an acid and an alcohol are shown:

Copper can be extracted from:

The compounds shown have the same:

The electronegativity of cesium is 0.7 and that of fluorine is 4.0. The bond is formed between the two is:

Which of following is capable of oxidizing an aqueous solution Sn+2 ions to Sn+4 ions?

Which of the following reaction actually occurs?

How will the equilibrium of the following reaction be affected if more chlorine is added?PCI5 ⇌ PCI3 + Cl2 (g)

Why are large alkane molecules cracked to form smaller molecules?

Sodium carbonate reacts with SO2 in an aqueous solution to give:

Mg metal reacts with HCl to give hydrogen gas. What is the minimum volume of HCl solution (27% by weight) required to produce 12.1 g of H2? The density of HCl solution is 1.14 g/cm3. Mg(s) + 2HCl(aq) → MgCl2 (aq) + H2 (g)

In the extraction of aluminium, the function of cryolite is to:

The biggest ion from the following:

The dipole moment of NH3 in coulombs metre is:

The diagram illustrates the energy chage of a set of reactions. Which of the following statement/s is/are correct?

Natural Gas (Sui Gas) gas contains _____% of Nitrogen in its composition.

Hexadecanoic acid is IUPAC name of:

How many isomeric compounds will be obtained when di-substituted benzene is prepared from its momo substituted benzene?

Why the BCl3 molecule is planar, whereas the PH3 molecule is pyramidal/

Radius of Cl atom is ______ and Cl- ion is _______ .

Which of the following factor/s affect the rate of reaction?

Formula for Potassium hexacyanoferrate (II) is:

Calculate the change in gravitational potential energy when a 9000 N life moves from ground level to the top of a building 400 m above the ground level?

What will be the spring constant, when a body of mass 0.5 kg is attached to a spring and placed on a horizontal frictionless table. The spring is stretched 40 cm when a force of 10 N is applied.

Ali pushes a toy car, initially at rest, towards Javed by exerting a constant horizontal force ‘F’ of magnitude 10 N through a distance of 2 metres. How much work is done on the toy car?

A train is approaching a station at 90 km/h sounding a whistle of frequency 1000 Hz. What will be the apparent frequency of the whistle as heard by a listener sitting on the platform?(Speed of sound= 340 m/s)

Identify the example/s of thin films:I. Soap bubblesII. Thin Layer of oil floating on waterIII. Flowing of honey

A truck starts from rest and moves with a constant acceleration. During the 5th second of its motion, it covers a distance of 36 meters. What is the acceleration of the truck?

An object 4 cm high is located 10 cm from the converging lens, whose focal length is 20 cm. The image that will be formed is:

A battery of 12 volts is connected to two resistors of 6 Ω and 4Ω joined together in series. Find the potential drop across each resistor respectively?

One Kilogram x One m/s2=?

The time that is referred to as the rotation of the earth about its axis is known as:

Two capacitors C1 (6µF) and C2 (12µF) are in series across 180 volts d.c. supply. Calculate the charges on C1 and C2

A ball is thrown with a speed of 30 m/s in a direction 30˚ above the horizon. What is the height to which it rises?

Ruby is a crystal of:

A positively charged particle with mass one-fourth and charge one half of an α- particle is:

Saad has a mass of 80 kg when resting on the ground at the equator. What will be the centripetal acceleration on Saad if the radius of the earth is 6.4 x 106 m.

1 x 107 electrons pass through a conductor in 1.0 µs. Find the current in ampere flowing through the conductor. Electronic charge is 1.6 x 10-19 C.

The sum of the products of the tangential component of magnetic field of induction and the length of an element of a closed curve taken in the magnetic field is µ0 times the current which passes through the area bounded by the curve is known as:

Identify the postulate/s of the special theory of relativity:I. There is no preferred or absolute inertial frame of reference i.e. all the interstitial frames are equivalent for the description of all physical law.II. The speed of light in a vacuum is the same for all observers in uniform translational relative motion and is independent of the motion of the observer and the source.

“A body at rest or moving with uniform velocity has zero acceleration. From Newton’s law of motion, the vector sum of all forces acting on it must be zero.” This is ______ condition of equilibrium.

If two coils are close together, then a changing current in one (the primary) sets up a changing magnetic field in the other (the secondary) and so induces an e.m.f. In it. This effect is known as:

An electric device has a resistance of 300 Ω, find the current in it when it is connected to a 450 volt source?

When an external voltage is applied to the junction in such a direction that it cancels the potential barrier, thus permitting current flow, is known as:

Find the angle between two forces of equal magnitude when the magnitude of their resultant is also equal to the magnitude of either of these forces:

Identify the property/ies of a good coolant:I. It should have as little effect on neutrons as possible.II. It should not induce any chemical effect with other materials in contact with the system.III. The coolant should not break up under the effect of radiations.

Two opposite point charges each of magnitude ‘q’ are separated by a distance 2d. What is the electric potential at a point ‘p’ midway between them?

Find the projection of vector A= 2i -8j + k in the direction of the vector B= 3i- 4j- 12k.

What will be the value of shunt resistance that must be connected across a galvanometer of 50.0 Ω resistance which gives full-scale deflection with 2.0 mA current so as to convert it into an ammeter of range 10.0 A?

The energy that flows from a high-temperature object to a low-temperature object is called:

The amount of charge that flows through a given cross-section of a wire in one second, if there is a steady current of 1 ampere in the wire is known as:

The gravitational force between two bodies does not depend upon?

Complete the sentences by choosing the most appropriate option from the following:Young people are often ________ than old people.

Select the incorrect segment from the following:We intend to have this wall taken down in order to convert the two room into one.

Choose the word most nearly opposite in meaning to the capitalized one:SUCCEED

Choose the word most similar in meaning to the capitalized one:FURIOUS

Choose the word most nearly opposite in meaning to the capitalized one:VIOLENT

There is a striking and unhappy contrast between man’s brilliant success at solving scientific problems and his miserable failure to solve so many of his political and social problems.It is natural, indeed wise, to ask whether science cannot be applied more effectively to the cure of the social and political ills of the gathering world.There is, of course, much that science can do and is doing. Science adds enormously to the comfort and interest of modern living. It is doing much to diminish the social evils of poverty and disease.Without doubt, many social, political, and economic problems would be more wisely handled if they were treated with unprejudiced objectivity and strict regard for truth which characterizes the work of the physical scientist.It's possible to handle political and economic problems scientifically?

Choose the word most similar in meaning to the capitalized one:DOUBTFUL

I forgot _____ take down his telephone number.

Select the incorrect segment from the following:For his birthday which is on 1st February, I shall give him a bicycle.

There is a striking and unhappy contrast between man’s brilliant success at solving scientific problems and his miserable failure to solve so many of his political and social problems.It is natural, indeed wise, to ask whether science cannot be applied more effectively to the cure of the social and political ills of the gathering world.There is, of course, much that science can do and is doing. Science adds enormously to the comfort and interest of modern living. It is doing much to diminish the social evils of poverty and disease.Without a doubt, many social, political, and economic problems would be more wisely handled if they were treated with unprejudiced objectivity and strict regard for truth which characterises the work of the physical scientist.Which of the following contrasts is drawn in the given passage?