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PHYSICS_PAHS_2018
Q1.
The range of a projectile projected from ground at an acute angle 30° is 70 m. The horizontal range of the projectile at angle 45° is
📅PAHS 2018
Q2.
The difference between two lengths l₁ and l₂ of different materials is independent of temperature change with linear expansivities α₁ and α₂ when
📅PAHS 2018
Q3.
The efficiency of an ideal engine based on a reversible cycle working between ice point and steam point is
📅PAHS 2018
Q4.
The relation between parallel-plate capacitance C, charge Q and distance d, when electrostatic force of attraction F and area A are constant, is
📅PAHS 2018
Q5.
Which of the following is the true increasing order of frequency?
📅PAHS 2018
Q6.
When the temperature of a gas is constant at a given temperature T, then
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Q7.
The power of radiation of a black body at 0°C is E watt. Then the rate of radiation at 273°C will be
📅PAHS 2018
Q8.
At night, intensity of sound increases due to
📅PAHS 2018
Q9.
A 2 ampere current-carrying solenoid has flux linked with each turn. The self-inductance of the solenoid is
📅PAHS 2018
Q10.
The power of a bulb at 220 V line is P. If its current is increased by 4%, then the power will
📅PAHS 2018
Q11.
Acceleration due to gravity is g′ at height h from earth surface and equal to acceleration due to gravity at depth d. Then d is equal to
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Q12.
A body of mass 200 kg is at height and falls. After 10 s, the power of the body is
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Q13.
For an ideal liquid flowing through a non-uniform tube, if cross-sectional area changes under streamline condition, the velocity changes according to
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Q14.
When a body falls in a viscous medium, its velocity increases finally and finally attains a certain constant value, then
📅PAHS 2018
Q15.
Laser light is a device that emits light through a process of optical amplification based on stimulated emission. Which statement is true for laser light?
📅PAHS 2018
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CHEMISTRY_PAHS_2018
Q1.
How much H₂O₂ should decompose to yield 8 g O₂?
📅PAHS 2018
Q2.
In an acid-base reaction, potassium hydroxide reacts with HCl and forms potassium chloride and water. The amount of KOH required to react with 4 g of HCl is
📅PAHS 2018
Q3.
In an acid-base reaction, 0.14 M HCl in a 2 litre volumetric flask is mixed with 1 litre of KOH. The molarity of KOH in very dilute solution is
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Q4.
243 kJ/mol of H₂ and 272 kJ/mol of Cl₂ react and form 430 kJ/mol HCl. The heat of formation for HCl in this reaction is
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Q5.
Energy is emitted when an electron jumps from higher orbit into lower orbit and energy is absorbed when electron jumps from lower orbit to higher orbit. This statement explains
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Q6.
Which of the following is least acidic?
📅PAHS 2018
Q7.
The IUPAC name of the given compound is
📅PAHS 2018
Q8.
Which of the following photon has least transition energy when it travels from
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Q9.
Which mixture is used to stimulate breathing in the treatment of respiratory disease?
📅PAHS 2018
Q10.
Velocity of sound is maximum in
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Q11.
Oxidation numbers of IO₃⁻ and SO₄²⁻ are
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Q12.
Iron rusting is due to
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Q13.
In a buffer solution, when small quantities of acid or alkali are added, pH value does not change because
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Q14.
Transition metals form coordination compounds and many of their compounds are coloured due to
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Q15.
In hydrogen spectrum, λ₁ and λ₂ are wavelengths of radiation emitted due to transition from second and first excited states to ground state. The ratio λ₁/λ₂ is
📅PAHS 2018
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BIOLOGY_PAHS_2018
Q1.
Protozoa belongs to Eukaryotes. Protozoa respire through
📅PAHS 2018
Q2.
Certain protozoans cause many diseases. The protozoan which causes kala-azar is
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Q3.
Chloragogen cells are found in earthworm. The function of chloragogen cells in earthworm is
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Q4.
Vitamins which are water soluble are
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Q5.
Which of the following hormones is an amino hormone?
📅PAHS 2018
Q6.
Cushing syndrome is caused by hypersecretion of
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Q7.
The common neurotransmitter in parasympathetic nervous system at synaptic cleft is
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Q8.
Which gland stores hormone before secretion and then releases it?
📅PAHS 2018
Q9.
Bees are colonial, social, polymorphic insects. Bee dancing is the behaviour for
📅PAHS 2018
Q10.
Cancer of connective tissue is
📅PAHS 2018
Q11.
Blood cells move out of the circulatory system and move towards the site of tissue damage or infection. This condition is commonly seen in
📅PAHS 2018
Q12.
Phylogenetic system of classification is based on
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Q13.
Plants having fruits are
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Q14.
Cross-pollination is always brought about by external agents. Pollination by wind or abiotic agents is characteristic of grass family in which pollen is
📅PAHS 2018
Q15.
In anaerobic respiration, the end products are ethyl alcohol or organic acid and CO₂, and respiration energy is liberated in the form of
📅PAHS 2018
Q16.
BOD or Biological Oxygen Demand is the amount of dissolved oxygen needed by aerobic biological organisms to break down organic material present in water. Which statement is true regarding BOD?
📅PAHS 2018
Q17.
Arthropods are most common in the world and it is the largest phylum. Their exoskeletons are
📅PAHS 2018
Q18.
Turner syndrome is due to
📅PAHS 2018
Q19.
When unwanted introns are removed and functional exons are joined during transcription, the process is known as
📅PAHS 2018
Q20.
In which type of aestivation do sepals and petals meet by their edges but do not overlap?
📅PAHS 2018
Q21.
Which of the following contains cytoplasmic granules with histamine?
📅PAHS 2018
Q22.
Blood is the buffer of the body. It is
📅PAHS 2018
Q23.
Which of the following glands acts as both exocrine as well as endocrine gland?
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Q24.
Which of the following organisms does not possess true coelom?
📅PAHS 2018
Q25.
Cornea is part of eyeball. It is a transparent layer made up of non-keratinized tissue and is used in eye donation. A most successful transplant is replacement of
📅PAHS 2018
Q26.
Sweet taste areas in humans are located in which portion of the tongue?
📅PAHS 2018
Q27.
Skeleton is the body part that forms supporting structure of an organism. Skeleton of human beings has
📅PAHS 2018
Q28.
Xerophytes have vascular system consisting of xylem and phloem. Xylem tissues assist in transportation. In woody plants, the xylem pulls water up to stomata, which are free for transpiration. Xerophytes show
📅PAHS 2018
Q29.
Which vitamins are essential for blood coagulation?
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Q30.
Neurons are structural and functional unit of nervous system. Bipolar neuron is found in
📅PAHS 2018