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1.

Help me to compose 9 couples of humorous triplets(poem of 3 lines).

Answer»

1. Fill your lungs, breathe in a full breath of air life's a conundrum, not a questionnaire admire its beauty...it is everywhere! 

2. An actor in an ongoing story let yourself partake of nature's glory a sterile life isn't mandatory. 

3. Pause, just long enough to set yourself free from the realm of lies and hyperbole tether time to the now, or it'll flee. 

4. Absorb lies and partial truths un-distilled realize, that not all dreams get fulfilled but, hope supplies a reason to rebuild. 

5. Don't lose touch with your imagination you're a unique sentient creation and reality...is but a foundation.

2.

An iron needle sinks in water whereas a ship made of iron floats on it because(a) the edge of the needle is pointed (b) the ship is flat (c) the ship is driven by powerful engine (d) specific gravity of the needle is greater than that of water displaced by it.

Answer»

(a) the edge of the needle is pointed

Because the specific gravity of the needle is greater than that of water displaced by it. Specific gravity (or relative density) 

= Density of the substance / Density of water at 4°C

The average density of iron needle is greater than water, therefore, it sinks.

3.

What are the causes of back pain.

Answer»

Causes of back pain are

  • Overweight 
  • Lack of flexibility 
  • Bad sitting posture 
  • Lack of exercise 
4.

What are the causes of backpain.

Answer»

Back pain commonly stems from strain, tension, or injury. 

Frequent causes of back pain are:  

(i) strained muscles or ligaments 

(ii) a muscle spasm 

(iii) muscle tension 

(iv) damaged disks injuries, fractures, or falls

5.

Which of the following statements is/are correct? 1. Cholera is a disease caused by bacteria. 2. Athlete’s foot is a disease caused by virus. Select the correct answer from the codes given below: (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 nor 2

Answer»

The correct option is: (a) 1 only

Explanation:

Cholera is a disease caused by bacterium Vibrio cholera. Athlete's foot is caused by fungal species such as Epidermophyton floccosum, Trichophyton sp.

6.

Consider the following conditions of a sick human body: 1. Swollen lymph nodes 2. Sweating at night 3. Loss of memory 4. Loss of weight Which of these are symptoms of AIDS? (a) 1 and 2 only (b) 2, 3 and 4 only (c) 1, 3 and 4 only (d) 1, 2, 3 and 4

Answer»

The correct option is: (d) 1, 2, 3 and 4

Explanation:

Acquired Immune Deficiency Syndrome (AIDS) is caused by HIV, a retrovirus in which immune system of the body is seriously affected. The symptoms are swollen-lymph nodes, sweating at night, loss of weight and loss of memory.

7.

Which one of the following sets is correctly matched? (a) Diphtheria, pneumonia and leprosy : Hereditary (b) AIDS, syphilis and gonorrhoea : Bacterial (c) Colour blindness, haemophilia and sickle cell anaemia : Sex linked (d) Polio, Japanese encephalitis and plague : Nematode

Answer»

(c) Colour blindness, haemophilia and sickle cell anaemia : Sex-linked

Explanation:

Diphtheria is a respiratory tract illness caused by Corynebacterium diphtheriae. Pneumonia is an inflammatory condition of the lung caused by virus or bacteria. Leprosy or Hansen's disease is caused by Mycobacterium leprae and Mycobacterium lepromatosis. AIDS, syphilis and gonorrhoea are viral diseases. Polio, Japanese encephalitis and plague are viral diseases. Colourblindness, haemophilia and sickle cell anaemia are X-linked (sex-linked) disease conditions.

8.

Which of the following are characteristics of diabetes mellitus, a common disease of human beings? 1. Increase of sugar in blood 2. Appearance of sugar in urine 3. Loss of hunger 4. Lack of energy Which of the statements given above are correct? (a) 1 and 2 only (b) 1, 2 and 3 only (c) 1, 2 and 4 only (d) 1, 2, 3 and 4

Answer»

The correct option is:(c) 1, 2 and 4 only

Explanation:

The characteristics of diabetes mellitus are increase of sugar in blood, appearance of sugar in urine and lack of energy.

9.

Assertion (A): The person with diabetes insipidus feels thirsty. Reason (R): A person with diabetes insipidus suffers from low secretion of vasopressin. Codes: (a) Both A and R are true and R is the correct explanation of A. (b) Both A and R are true, but R is not the correct explanation of A. (c) A is true, but R is false. (d) A is false, but R is true.

Answer»

(a) Both A and R are true and R is the correct explanation of A.

Explanation:

Diabetes Insipidus (DI) is a condition characterized by excessive thirst and excretion of large amounts of severely diluted urine. Diabetes mellitus is a group of metabolic diseases in which a person has high blood sugar, due to two causes either the pancreas does not produce enough insulin, or because cells do not respond to the insulin that is produced. The most common type in humans is the neurological form which involves a deficiency of arginine vasopressin or antidiuretic hormone.

10.

Which of the following are associated with diabetes mellitus, a common disease in adults? 1. Higher sugar level in blood 2. Lower sugar level in blood 3. Lower insulin level in blood 4. Higher insulin level in blood Select the correct answer from the codes given below: Codes: (a) 2 and 4 (b) 2 and 3 (c) 1 and 3 (d) 1 and 2

Answer»

The correct option is: (c) 1 and 3

Explanation:

Diabetes mellitus is a metabolic disease in which a person has high blood sugar, either because the pancreas does not produce enough insulin or because cells do not respond to the insulin. Hyposecretion of insulin affects the rate of sugar metabolism

11.

Which of the following is not a true statement about chloroplasts and mitochondria? (a) Each contains a small amount of DNA (b) Neither are components of the endomembrane system (c) Both are membrane less organelles (d) Mitochondria do not synthesise all their proteins

Answer»

(c) Both are membrane less organelles

Chloroplasts and mitochondria are considered to be the membrane-bound endosymbionts in the eukaryotic cells. Both possess their own genetic 

12.

Match List-I with List-II and select the correct answer from the codes given below the lists:List-I List-II(Diseases)(Types of diseases)A. Haemophilia1. Deficiency disease B. Diabetes 2. Genetic diseaseC. Rickets3. Hormonal disorderD. Ringworm4. Fungal infectionCodes:

Answer»

The correct option is: (b) 2 3 1 4

Explanation:

Haemophilia is a group of hereditary genetic disorders that impair the body's ability to control blood clotting or coagulation. It is an X-chromosome-linked disorder and more likely to occur in males.

Diabetes is a hormonal disorder in which sugar metabolism is affected. Deficiency of vitamin-D causes rickets in which bones of legs bend. Ringworm is fungal lesion like skin infection caused by Trichophyton rubrum, Trichophyton tonsurans, T. interdigitale, Microsporum Canis, T. mentagrophytes.

13.

Consider the following statements: 1. Carbon dioxide, chlorophyll and sunlight all are essential for photosynthesis. 2. Rate of photosynthesis is minimum in red light and maximum in green light. 3. Increase in O2 concentration decreases photosynthesis. Which of the statements given above are correct about photosynthesis?(a) 1 and 2 (b) 2 and 3 (c) 1 and 3 (d) 1, 2 and 3

Answer»

The correct option is: (c) 1 and 3

Explanation:

he raw materials needed by plants to undergo photosynthesis are sunlight, water, soil nutrients, and carbon dioxide. The chlorophyll molecules capture the photons of sunlight to pass it to reaction centre. The range of the spectrum of sunlight absorbed by chlorophylls in photosynthesis is red and blue. They do not absorb the green portion of the spectrum. The concentration of oxygen when increases beyond a limit it causes the rate of photosynthesis to decrease.

14.

Consider the following statements and choose the correct ones. 1. Anthesis is a phenomenon of ripening of fruits. 2. Fruits developed without fertilization are parthenocarpic. 3. Plants undergo single fertilization event. (a) 1 and 2 only (b) 1 only (c) 2 only (d) All are correct

Answer»

The correct option is: (c) 2 only

Explanation:

Anthesisisthe phenomenon of opening of flower buds to become flowers. Fruits which are developed without fertilization are called parthenocarpic fruits. It does not have seeds. The plants undergo double fertilization as the egg fuses with the male gamete and the two polar bodies also get fused with another male gamete. The fertilized egg develops into the diploid embryo while the double fertilized polar bodies become the triploid endosperm.

15.

Consider the following statements: 1. Lateral outgrowth of leaf base is called stipule. 2. Leaves with stipules are called as exstipulate leaves. 3. Leaves without stipules are called as stipulate leaves. Which of the statements given above is/are correct? (a) 1, 2 and 3 (b) 1 only (c) 2 and 3 (d) 1 and 3

Answer»

The correct option is: (b) 1 only

Explanation:

A small lateral outgrowth present at the leaf base is called stipule. Leaves with stipule are called as stipulate and leaves without stipule are called exstipulate.

16.

The phenomenon known as “Early Effect” in a bipolar transistor refers to a reduction of the effective base-width caused by(A) Electron - hole recombination at the base(B) The reverse biasing of the base-collector junction(C) The forward biasing of the emitter-base junction(D) The early removal of stored base charge during saturation-to-cut off switching.

Answer»

The correct answer B

Explanation:

The reverse biasing of the base-collector junction.

In the case of discussion of Early Effect in a bipolar transistor, there happens a reduction because of the reverse biasing of the base-collector junction, and it leads to a reduction in the effective base width.

This can be explained as reverse biasing of the base means the relationship of how there is a negative direction which denotes that emitter junction is reverse biased. This causes electron-hole pairs to be generated. And while the electrons flow to the collector it makes the holes not able to flow out of the base contact.

17.

The only snake that builds its nest is : (a) Krait(b) King cobra (c) Chain viper (d) Saw scaled viper

Answer»

The correct  option is: (b) King cobra

Explanation:

King Cobra is the only snake in the world that builds a nest. The female snake, which is about 13 feet long builds a nest to lay its eggs. 

18.

Artificial insemination involves the use of : (a) Natural semen and natural diluent (b) Natural semen and artificial diluent (c) Artificial semen and natural diluent (d) Artificial semen and artificial diluent 

Answer»

The correct option is: (b) Natural semen and artificial diluent 

Explanation:

The natural semen, collected from the male should be ideally used with 30-45 minutes of collection. In general, if semen has to be stored beyond one hour after collection, dilution with ideal extender and careful handling is essential. Diluents increase the volume of semen, retains cell integrity and buffering the detrimental effect arising on storage.

19.

Consider the following statements : (1) Heart is three chambered in fishes (2) Heart is four chambered in birds (3) All animals of class amphibia are characterised by two pairs of limbs (4) In all reptiles respiration is by lungs only Which of the above statements are correct ? (a) 1, 2, 3 and 4 (b) 1 and 3 (c) 2 and 4 (d) 2, 3 and 4 

Answer»

The correct option is: (c) 2 and 4

Explanation:

Fishes have 2 chambered heart. Birds have a four-chambered heart. Frogs, toads, newts and salamanders have four legs. But caecilians, which form the least known group of amphibians, have no limbs and only a very short tail. They resemble snakes, worms or eels. 

20.

The pH of water at 25°C is 7. When it is heated to 100°C, the pH of water (a) Increases (b) Decreases (c) Remains same (d) Decreases up to 50°C and then increases

Answer»

The correct option is: (b) Decreases

Explanation:

Dissociation of water is temperature dependent

H2⇋ H+ + OH

Dissociation constant = Kw = [OH] [H+] Water at 100°C will have more of the molecules dissociated to ions then at 25°C i.e., Kw increase with increase in temperature.

∴ pH of water decreases on increasing temperature. 

At 100°C pH of water becomes 6.14.

21.

Consider the following statements regarding the recent global outbreak of ‘Swine flu’ I. The agent of infection is not well identified II. The risk is higher in those who consume pork III. It has a propensity to spread from contact with an infected person IV. Absence of an effective treatment or vaccine makes it risk for a global pandemic Which of the statements given above is/are correct? (a) I, II and IV (b) III and IV (c) II and III (d) III only

Answer»

The correct option is: (c) II and III

Explanation:

Swine flu is an infection by Swine influenza Virus, (SIV or S-OIV) is any strain of the influenza family of viruses that is endemic in pigs. As of 2009, the known SIV strains include influenza C and the subtypes of influenza A (H1N1, H1N2 H3N1, H3N2 and H2N3). 

 Swine influenza virus is common throughout pig populations worldwide. People with regular exposure to pigs are at increased risk of swine flu infection. In August 2010, the World Health The organization declared the swine flu pandemic officially all over.

22.

The element X has the electronic configuration 2, 8, 18, 8, 1. Without identifying x,(a) predict the sigh and charge on a simple ion of X.(B) write if X be an oxidizing agent or reducing agent and why.

Answer»

(a) X+

(b) X will be a strong reducing agent as it will have the tendency to donate its valence electron.

23.

Which of the following processes proceeds in the second phase of bio transformation? a) Acetylation b) Reduction c) Oxidation d) Hydrolysis

Answer»

The correct option is (a) Acetylation.

Acetylation processes proceeds in the second phase of bio transformation.

24.

Reduction of silicon dioxide

Answer»

Silicon dioxide, in the form of quartz, is in abundance around my local area and I would be interested in creating silicon as a separate element. My problem is that I don't know what to react silicon dioxide with to reduce it to silicon. I have read that it can be reduced with carbon but I couldn't find any information about the temperatures this takes place at. I am also aware that a thermic reaction can take place between aluminium and silicon when mixed with sulfur but I don't have any aluminium powder. 

25.

A : At high altitude regions the cooking of food becomes difficult. B : Water boils at lower temperature when the pressure is low. (a) Both A and B are wrong (b) A and B are correct and B is not the correct explanation of A (c) A and B are correct and B is the correct explanation of A (d) A is correct but B is wrong.

Answer»

(c) A and B are correct and B is the correct explanation of A

26.

What is the difference between a CFL and an LED lamp? 1. To produce light, a CFL uses mercury vapour and phosphorus while an LED lamp uses semiconductor material. 2. The average lifespan of a CFL is much longer than that of LED lamp. 3. A CFL is less energy - efficient as compared to an LED lamp.Which of the statement(s) given above is/are correct? (a) 1 only (b) 2 and 3 (c) 1 and 3 (d) 1, 2 and 3

Answer»

The correct option is: (c) 1 and 3

Explanation:

To produce light, a CFL uses mercury vapour and phosphorus while an LED lamp uses semiconductor material.

27.

Which of the following types of burial is not observed at Mohenjodaro?  (a) Complete burial  (b) Fractional burial  (c) Post-cremation burial  (d) Double burial

Answer»

(d) Double burial

28.

For a ≠ 0, a0 is ________.

Answer»

For a ≠ 0, a0 is 1

According to the law of exponents, anything to the power of 0 is 1. {Except the variable value 0}.

Hence, a0 is 1.

29.

A drum of kerosene oil is 3/4 full. When 15 litres of oil is drawn from it, it is 7/12 full. The capacity of the drum is ........

Answer»

Let Capacity of drum = a litres

A/Q,

(3/4 x a) - 15 = 7/12 x a

3a/4 - 7a/12 = 15

(3a-7a)/12 = 15

2a/12 = 15

a = 15 x 12/2

a = 90 litres

Capacity of drum = 90 litres.

30.

Oxygen transportation in a human body takes place through 1. Blood 2. Lungs 3. Tissue The correct sequence of transportation is (a) 1, 2 and 3 (b) 3, 1 and 2 (c) 2, 1 and 3 (d) 1, 3 and 2

Answer»

The correct option is: (c) 2, 1 and 3

Explanation:

Lungs are the organs which actually oxygenate up the blood by exchanging the carbon dioxide to outside and taking up oxygen which comes to them by breathing in by the organism. This oxygen in the blood is then transported to each tissue of the body. Integrated and coordinated works of circulatory and respiratory systems are responsible for this.

31.

Consider the following statements: Assertion (A): Scientists can cut apart and paste together DNA molecules at will, regardless of the source of the molecules. Reason (R): DNA fragments can be manipulated from restriction endonucleases and DNA ligases. Codes: (a) Both A and R are true and R is the correct explanation of A. (b) Both A and R are true, but R is not the correct explanation of A. (c) A is true, but R is false. (d) A is false, but R is true.

Answer»

(a) Both A and R are true and R is the correct explanation of A.

In genetic engineering, a DNA segment from any foreign source can be inserted into any other genetic material. The enzymes, called restriction endonucleases, act like scissors that cut apart a particular or specific part of the DNA. This cut out DNA piece can be inserted into other genetic material which has been cut to make space for containing the foreign DNA. The DNA once inserted can be ligated by enzymes known as ligases. 

32.

A sample of chloroform before using as an anaesthetic, is tested by (a) Fehling’s solution (b) Ammonical cuprous chloride (c) Ammonical silver nitrate solution (d) Silver nitrate solution after boiling with alcoholic KOH

Answer»

(c) Ammonical silver nitrate solution

Explanation:

It is tested by ammonical silver nitrate solution.

33.

Meaning of colours on the floater.

Answer»

"Floater" is a common term referring to seeing abnormal spots moving in the vision.  It is important to be careful and very specific in how this is described as the description itself can help lead to the proper diagnosis.  Some people use the phrase, "I feel like there is something  moving in my eye".  However, this phrase could also be used to describe the physical sensation of something irritating the surface of the eye (a foreign body sensation), and if the meaning of this phrase is not clarified, the wrong diagnosis could be made.

34.

Which one of the following statements is not true about cosmic rays? (a) They have very high frequency. (b) They have very high wavelength. (c) They are made of highly energetic charged particles. (d) They originate from the sun

Answer»

(b) They have very high wavelength.

Cosmic rays have very high frequency >1023 Hz and wavelength <10–24 m. 

35.

Pendulum clocks become slow in summer because (a) days in summer are large. (b) of the friction in the coil. (c) the length of the pendulum increases. (d) the weight of the pendulum changes.

Answer»

(c) the length of the pendulum increases.

Pendulum clocks become slow in summer 

because the length of the pendulum increases. 

Increase in length ∆l = lo a ∆T 

Where lo = original length, α = coefficient of 

linear expansion and ∆T = change in temperature.

36.

Consider the following statements and choose the correct ones. 1. Hirudin, an anticoagulant protein, is obtained from Brassica napus. 2. Pyrethrin is an insecticide obtained from floral heads of Vincia rosea. 3. Tissue culture technique is based on the totipotency. (a) 1 and 2 only (b) 1 and 3 only (c) 2 and 3 only (d) All are correct

Answer»

The correct option is: (b) 1 and 3 only

Explanation:

Hirudin, an anticoagulant protein that does not allow blood to clot or coagulate, has been obtained from GM Brassica napus. Tissue culture is a technique that employs the ability of mature cells to dedifferentiate and give rise to whole organism. This particular ability is totipotency.

Pyrethrin is an insecticide obtained from flowers of Chrysanthemum cinerarifolium of Asteraceae.

37.

Match the following plants with the drugs they yield.List-IList-II(Plants) (Drugs)A. Papaver somniferum1. Quinine B. Cinchona officinalis2. IsabgolC. Withania somnifera3. AshwagandhaD. Plantago ovata 4. OpiumCodes:

Answer»

The correct option is: (a) 2 4 3 1

Explanation:

Papaver somniferum or poppy is the source of opium which is used as a narcotic. Quinine is an anti-malarial drug obtained from Cinchona officinalis. Ashwagandha, used as a relief agent in common cold, is obtained from Withania somnifera. Isabgol used as a remedial intake during stomach upsetness is obtained from Plantago ovata.

38.

Consider the following statements and choose the correct ones. 1. Loose smut of wheat is caused by Puccinia graminis. 2. Father of Indian mycology and plant pathology is E.J. Butler. (a) 1 only (b) 2 only (c) Both 1 and 2 (d) Neither 1 or 2

Answer»

The correct option is: (b) 2 only

Explanation:

Father of Indian mycology (study of fungus) and plant pathology is E.J. Butler. Loose smut of wheat is a fungal disease of wheat in which the ears of and grains of wheat are replaced by a mass of dark spores. It is caused by Ustilago tritici.

39.

In the hooch tragedy (casualty occurring due to the wine poisoning) sometimes the incidents of blindness occurs due to the poisonous substance: (a) ethyl alcohol (b) methyl alcohol (c) amyl alcohol (d) benzyl alcohol

Answer»

(b) methyl alcohol

Explanation:

In most of the hooch tragedies methyl alcohol was used as the chief adulterant in liquor. Toxicity of methyl alcohol manifests as permanent blindness or ultimately death due to respiratory failure.

The main reasons for its use as adulterant are being similarity in appearance and taste with ethyl alcohol and easy availability.

40.

It is suggested by the doctors that the person suffering from prostrates in the kidney or gallbladder should not consume excessively the food stuffs like tomatoes, eggs, milk etc which are the major causes of the crystal formation as the prostrates, which is made of :(a) Calcium phosphate (b) Calcium Oxalate (c) Calcium chloride (d) Calcium sulphate

Answer»

(b) Calcium Oxalate

Explanation:

Prostrate in kidney or gallbladder is composed of calcium oxalate.

41.

What is the role of ultraviolet (UV) radiation in the water purification system? 1. It inactivates / kills the harmful microorganisms in water. 2. It removes all the undesirable odours from the water. 3. It quickens the sedimentation of solid particles and improves the clarity of water. Which of the statements given above is/are correct? (a) 1 only (b) 2 and 3 only (c) 1 and 3 only (d) 1, 2 and 3

Answer»

The correct option is: (A)

Explanation:

It inactivates/kills the harmful microorganisms in water.

42.

Credit can Play a negative role. Justify the statement.

Answer»

Credit Play a negative role:-

1. Credits pushes the borrowed in depth. 

2. Credits reduces the repulation of the borrower. 

3. Credits reduces the borrower to self it fixed asserts.

43.

A heat engine that in each cycle does positive work and loses energy as heat, with no heat energy input, would violate:

Answer»

The first law of thermodynamics.

44.

The metal that is extracted from sea water is  A) sodium    B) calcium  C) magnesium    D) tin

Answer»

Magnesium metal that is extracted from sea water.

45.

From a set of 11 square integers, show that one can choose 6 numbers a2; b2; c2; d2; e2; f2 such that a2 + b2 + c2 ≡ d2 + e2 + f2 (mod 12).

Answer»

The first observation is that we can find 5 pairs of squares such that the two numbers in a pair have the same parity. We can see this as follows:

Odd numbersEven numbersOdd pairsEven pairsTotal pairs
011055
110055
29145
38145
47235
56235
65325
74325
83415
92415
101505
110505

Let us take such 5 pairs: say (x21 ; y21); (x22 ; y22); .... (x25 ; y25). Then x2j - y2j is divisible by 4 for 1  j  5. 

Let rj be the remainder when x2j - y2j is divisible by 3, 1  j  3. 

We have 5 remainders r1; r2; r3; r4; r5

But these can be 0, 1 or 2. Hence either one of the remainders occur 3 times or each of the remainders occur once. 

If, for example r1 = r2 = r3, then 3 divides r1 + r2 + r3; if r1 = 0; r2 = 1 and r3 = 2, then again 3 divides r1+r2+r3

Thus we can always find three remainders whose sum is divisible by 3. This means we can find 3 pairs, say, (x21 ; y21); (x22 ; y22); (x23 ; y23) such that 3 divides (x21 - y21) + (x22 - y22)+(x23 - y23). 

Since each difference is divisible by 4, we conclude that we can find 6 numbers a2; b2; c2; d2; e2; f2 such that 

a2 + b2 + c2 ≡ d2 + e2 + f2 (mod 12):

46.

x - x - 1/2 = 1 - x - 2/3 find the value of x.

Answer»

x - x - 1/2 = 1 - x - 2/3

Solve the equations:

x - x - 1/2 = 1 - x - 2/3

x - x + x = 1 - 2/3 + 1/2

x = 1 - 2/3 + 1/2

x = (6-4+3)/6

x = (2+3)/6

x = 5/6

47.

Match List-I with List-II and select the correct answer by using the codes given below:List-I List-I A. Cycas1. Living fossilB. Zamia pygmaea2. Smallest gymnospermC. Sequoia gigantea3. Tallest gymnospermD. Abies balsamea4. Canada balsamCodes:

Answer»

The correct option is:(a) 1 2 3 4

Explanation:

Living fossils are those organisms whose close relatives are not living on the earth. Cycas is a living fossil. Zamia pygmaea is endemic to Cuba and is the smallest gymnosperm on the earth. Sequoiadendron giganteum is the tallest coniferous gymnosperm known as redwoods. Canada balsam is obtained from the Abies balsamea (a North American fir) also known as Canada balsam.

48.

Which type of UV radiations can be lethal to organisms?

Answer» UVA and UVB damages DNA and cause lethal to organism
49.

An Anglo-German team of astronomers has discovered a new planet orbiting a nearby Sun at just the right distance for an Earth-like climate that could support life. The name of new planet is(a) HD40307g (b) HD40308g (c) HE40307g (d) HE40308g

Answer»

The correct option is: (a) HD40307g

Explanation:

HD40307g is an exoplanet orbiting in the habitable zone of HD40307. It is located 42 light-years away in the direction of the southern constellation Pictor. The planet was discovered using the European Southern Observatory’s HARPS apparatus by a team of astronomers of University of Hertfordshire and Guillem Anglada-Escude of the University of Goettingen, Germany.

50.

Out of H2O &amp; H3O+ which is stronger acid?

Answer»

  stronger acid is = H3O+ .