17IOM 2007

Q1.
When \(\mathrm{NH_4Cl}\) is added to \(\mathrm{NH_4OH}\), its pH:
📅IOM 2007
Q2.
The number of molecules of \(\mathrm{CaCO_3}\) remaining when \(1\) mole of \(\mathrm{CaCO_3}\) is allowed to react with \(1\) mole of \(\mathrm{HCl}\) is:
📅IOM 2007
Q3.
A \(60\,\mathrm{g}\) compound on analysis produced \(24\,\mathrm{g}\) carbon, \(4\,\mathrm{g}\) hydrogen, and \(32\,\mathrm{g}\) oxygen. The empirical formula of the compound is:
📅IOM 2007
Q4.
Ozone used for bleaching delicate fibres is prepared from a mixture of:
📅IOM 2007
Q5.
In the reaction \(\mathrm{KMnO_4(aq)+H_2SO_4(aq)\rightarrow MnSO_4(aq)+K_2SO_4(aq)+H_2O(l)+O_2(g)}\), manganese is:
📅IOM 2007
Q6.
Both phenol and ethyl alcohol contain -OH group but phenol is much acidic than ethyl alcohol due to the:
📅IOM 2007
Q7.
When ethyl alcohol is heated with excess of concentrated sulphuric acid at about 160-170°C, it produces:
📅IOM 2007
Q8.
Calomel is:
📅IOM 2007
Q9.
How many moles of CO2 are present in 220 mg?
📅IOM 2007
Q10.
Chlorine acts as a bleaching agent in the presence of:
📅IOM 2007
Q11.
Nature of bond formed when two elements react depend upon:
📅IOM 2007
Q12.
Aqueous solution of SO2 reacts with H2S to precipitate sulphur. Here SO2 acts as:
📅IOM 2007
Q13.
The reaction occurring at the cathode during the electrolysis of an aqueous solution of \(\mathrm{NaCl}\) is:
📅IOM 2007
Q14.
If the rate of reaction becomes twice for every 10°C rise in temperature, by what factor the rate of reaction increases when temperature is increased from 25°C to 75°C?
📅IOM 2007
Q15.
Rusting of iron in moist air involves:
📅IOM 2007
Q16.
CHCl3 is stored in dark coloured bottles, because:
📅IOM 2007
Q17.
Ergot poisoning is due the presence of:
📅IOM 2007
Q18.
A sample of water from a well in Terai contains 0.1gm Arsenic per litre. What is the concentration of Arsenic in ppm?
📅IOM 2007
Q19.
When two atoms of hydrogen combine to form a molecule of hydrogen gas. The energy of the molecule is:
📅IOM 2007
Q20.
Dehydration of ethanol yields:
📅IOM 2007
Q21.
The atomic number of Nitrogen is 7 and the atomic number of Oxygen is 8. The total number of electrons in a Nitrate ion (NO3-) is:
📅IOM 2007
Q22.
When C2H5OH is treated with acidic K2Cr2O7 it forms CH3CHO. It is an example of:
📅IOM 2007
Q23.
One kilogram of water contains 4gm of NaOH. The concentration of the solution is best expressed as:
📅IOM 2007
Q24.
Which of the following has highest boiling point:
📅IOM 2007
Q25.
If one mole of methane is converted into products, then which one of the following statement is true?
📅IOM 2007
Q26.
Which one of the following coordination compounds has an incorrect formula?
📅IOM 2007
Q27.
Which of the following are isomers?
📅IOM 2007
Q28.
A solution of Sodium in liquid Ammonia is blue due to the presence of:
📅IOM 2007
Q29.
Which of the following electronic configuration given for some neutral atoms would be expected to have highest second ionization energy IE2?
📅IOM 2007
Q30.
When temperature of gas is increased its viscosity:
📅IOM 2007
Q31.
The maximum wavelengths emitted by the sun at the temperatures (in Kelvin) T1, T2 and T3 are 650 nm, 510 nm and 350 nm respectively. Which one of the following is correct?
📅IOM 2007
Q32.
Two ebonite rods A and B of radii 1.5cm and 2cm respectively are rubbed together. The result will be:
📅IOM 2007
Q33.
Power of ionization of a gamma particle is:
📅IOM 2007
Q34.
Activity of 1.85 * 10^11 disintegration per second is nearly equivalent to:
📅IOM 2007
Q35.
The specific gravity of sugar is 1.59. Which one is its correct density in S.I. system?
📅IOM 2007
Q36.
If a base ball player can throw a ball to a maximum distance = d over a ground, what is the maximum vertical height to which he can throw it? (Assume that the ball has same initial speed in each case):
📅IOM 2007
Q37.
When an elastic material with young's modulus 'Y' is subjected to a stretching stress 'S' the elastic energy stored per unit volume of material is:
📅IOM 2007
Q38.
Two water drops of equal radius fall through air with the same terminal velocity \(v\). If the two drops coalesce to form a single larger drop, the new terminal velocity is:
📅IOM 2007
Q39.
The radius of hydrogen atom in the ground state is 0.53 A. After excitation, it is found that this radius increases to 2.12 A. The value of principle quantum number will be:
📅IOM 2007
Q40.
What is the value of -40° Fahrenheit in Celsius scale?
📅IOM 2007
Q41.
What is the potential drop across an electric hot plate which draws 5 A when it is hot and resistance is 24 Ohm?
📅IOM 2007
Q42.
A refrigerator has to transfer an average of 250J of heat per second from -10°C to 25°C. The average power consumed by the refrigerator is:
📅IOM 2007
Q43.
A tube closed at one end containing air when excited produces the fundamental note of a frequency 512 Hz. If the tube is open at both ends the fundamental frequency that can be excited is:
📅IOM 2007
Q44.
The pendulum of clock is made of brass. If the clock keeps correct time at 20°C, how many seconds per day will it lose at 35°C? (alpha_brass = 18 * 10^-6 /°C):
📅IOM 2007
Q45.
A body cools down from 65°C to 60°C in 5 minutes. It will cool down 60°C to 55°C in:
📅IOM 2007
Q46.
An object is placed at a distance 'u' from a simple microscope of focal length 'f'. The angular magnification obtained depends:
📅IOM 2007
Q47.
A parallel plate capacitor is charged and the charging battery is then disconnected. If the plates of the capacitor are moved further apart by means of insulating handles:
📅IOM 2007
Q48.
A thin stream of water from a tap is attracted by placing a rod near it. The rod is:
📅IOM 2007
Q49.
If the current in an electric bulb drops by 2%, the power decreases by:
📅IOM 2007
Q50.
Which one of the following is an echinoderm?
📅IOM 2007
Q51.
Syngamy occurs during the formation of:
📅IOM 2007
Q52.
During hibernation and aestivation, the respiration in frog is:
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Q53.
Serum is:
📅IOM 2007
Q54.
Carrier of genetic information is:
📅IOM 2007
Q55.
Which of the primate is the closest relative of man?
📅IOM 2007
Q56.
Dengue Fever is caused by the bite of:
📅IOM 2007
Q57.
The total duration of cardiac cycle is:
📅IOM 2007
Q58.
Hormone which regulates metamorphosis of tadpole is:
📅IOM 2007
Q59.
Octopus belongs to:
📅IOM 2007
Q60.
Blastopore in the vertebrates develops into:
📅IOM 2007
Q61.
Anadromous fishes move from:
📅IOM 2007
Q62.
Organs of corti cells are related with:
📅IOM 2007
Q63.
In a flowering plant when pollen grains of flower are transferred to the stigma of another flower on the same plant, it is known as:
📅IOM 2007
Q64.
The element that is not very mobile and remains fixed to mitochondria and chloroplast is:
📅IOM 2007
Q65.
The nitrifying bacteria convert:
📅IOM 2007
Q66.
Which group of plants assimilates maximum CO2 annually by means of photosynthesis?
📅IOM 2007
Q67.
Polymerase Chain Reaction (PCR) is used for:
📅IOM 2007
Q68.
Every carbohydrate is:
📅IOM 2007
Q69.
Totipotency refers to the:
📅IOM 2007
Q70.
The process of chain elongation of amino acids during protein synthesis is called:
📅IOM 2007
Q71.
The bacteria which grow best as aerobes but can grow without oxygen also are:
📅IOM 2007
Q72.
The molecular similarities in the structure of DNA, RNA and comparable proteins help:
📅IOM 2007
Q73.
The sporangia of fern develop on:
📅IOM 2007
Q74.
Agaricus the edible mushroom belongs to:
📅IOM 2007
Q75.
Which of the following is parasitic form of algae?
📅IOM 2007
Q76.
The end product of glycolysis in plant is:
📅IOM 2007
Q77.
Viruses have:
📅IOM 2007
Q78.
Water rises through the xylem mainly by:
📅IOM 2007
Q79.
Which of the following is used in industrial preparation of ethanol?
📅IOM 2007
Q80.
Lichens represent symbiosis between:
📅IOM 2007
Q81.
Viviparous germination can be observed in:
📅IOM 2007
Q82.
Which one of the following group of plants is devoid of true nucleus?
📅IOM 2007