Description : The colour of Methyl orange in basic solution is (A)Orange (B) Pink (C) Yellow (D) Colourless
Last Answer : (C) Yellow
Description : Select from the following the statement which is true for bases. (a) Bases are bitter and turn blue litmus red. (b) Bases have a pH less than 7 (c) Bases are sour and change from red litmus to blue. (d) Bases turn pink when a drop of phenolphthalein is added to them.
Last Answer : Answer: (d) Bases turn pink when a drop of phenolphthalein is added to them.
Description : Methyl orange indicator turns (A) Orange yellow in alkaline medium (B) Orange yellow in acidic medium (C) Colourless in acidic medium (D) Colourless in basic medium
Last Answer : (A) Orange yellow in alkaline medium
Description : Which of the following is NOT a general property of hydroxide bases in aqueous solution? w) High solubility x) Bitter taste y) Ability to neutralize aqueous acid solutions z) Ability to change phenolphthalein from colorless to red
Last Answer : ANSWER: W -- HIGH SOLUBILITY (The hydroxides of the alkali metals are soluble in water but all the other metal hydroxides are only moderately or sparingly soluble.)
Description : A solution containing `Na_(2)CO_(3)` and `NaOH` requires `300 ml` of `0.1 N HCl` using phenolphthalein as an indicator. Methyl orange is then added to
Last Answer : A solution containing `Na_(2)CO_(3)` and `NaOH` requires `300 ml` of `0.1 N HCl` using phenolphthalein ... solution is `(NaOH=40, Na_(2)CO_(3)=106)`
Description : A colourless water-soluble compound on strong heating liberates a brown colored gas and leaves a yellow residue that turns white on cooling. An aqueou
Last Answer : A colourless water-soluble compound on strong heating liberates a brown colored gas and leaves a yellow residue that turns ... (3))_(3)` D. `NaNO_(3)`
Description : An aluminium strip is kept immersed in a freshly prepared ferrous sulphate solution taken in a test tube, the change observed is that a) Green solution slowly turns brown b) Lower end of the test ... c)A colourless gas with smell of burning sulphur is evolved c)Light green solution changes to blue
Last Answer : a) Green solution slowly turns brown
Description : Why the blue colour of CuSO4 turns colourless during electrolysis of CuSO4 solution by platinum electrode.
Last Answer : The platinum electrodes are inert. Hence does not dissolve into the solution. The Cu++ ions (blue) present in the solution are discharged on the surface of cathode & OH - are ... a result of this electrolysis, blue coloured CuSO4 solution is slowly converted into colorless H2SO4 solution.
Description : The most common constituents of alkalinity in natural water are measured by titrating the water sample with 0.02 N H2SO4 using (a) Eriochrome Black T and Ferroin indicators (b) Ferroin ... (c) Phenolphthalein and Methyl Orange indicators (d) Methyl Orange and Ericochrome Black T indicators
Last Answer : (c) Phenolphthalein and Methyl Orange indicators
Description : Acids turn blue litmus into which color? (1) Green (2) Red (3) Pink (4) Colourless
Last Answer : (2) Red Explanation: Blue litmus paper turns red under acidic conditions and red litmus paper turns blue under basic or alkaline conditions, with the color change occurring over the pH range 4.5–8.3 at 25 °C (77 °F).
Description : What's taller than a thousand trees growing taller and taller by the season. It's yellow and orange and sometimes it's pink. It has no mind but often thinks. When it falls the world will crumble ... being seen but whispering softly into the green. (the green stands for grass) What is it? -Riddles
Last Answer : Sunset.
Description : A potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed? (1) From brown to blue-black (2) From brown to orange-red (3) From blue to pink (4) From pink to blue-green
Last Answer : (1) From brown to blueblack Explanation: Any form of starch (carbohydrate) turns blue-black when iodine solution is applied to it. This is because starch is composed of polymers of ... already mentioned. The complex of iodine stuck inside the amylose coil produces a characteristic blueblack colour.
Description : potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed? (1) From brown to blue-black (2) From brown to orange-red (3) From blue to pink (4) From pink to blue-green
Last Answer : (1) From brown to blueblack Explanation: The Iodine test is used to test for the presence of starch. Iodine solution — iodine dissolved in an aqueous solution of potassium iodide — reacts with the starch producing a purple black colour.
Description : A potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed? (1) From brown to blue–black (2) From brown to orange–red (3) From blue to pink (4) From pink to blue–green
Last Answer : From brown to blue–black
Last Answer : From brown to blue-black
Description : Which gas turns litmus colourless?
Last Answer : Chlorine
Description : When phenolphthalein is added to a basic solution what happens?
Last Answer : Phenolphthalein is added to a basic solution is colorless.
Description : PH is the negative logarithm of the hydrogen Ion Concentration express4ed in moles/liter of aqueous solution. PH of buffer solution is calculated by. Henderson's equation Name the best ... Chemical kinetics deals with study of. Rates and mechanisms of chemical and Biochemical reactions
Last Answer : What does Thermodynamics helps in predicting ?
Description : Natalie had fourteen balls. Each one color. She alternated the colors each day, there was a blue, pink, purple, green, red, yellow, black, white, orange, turquoise, tan, neon pink, and brown. Each day of the ... the week will she go to Arby's? What ball will she have while she is at Arby's? -Riddles
Last Answer : She will go to Arby's on Monday, for that is the first day of the week and A is the first letter of the alphabet. So on Tuesday she would go to Burger King. On Wednesday she would go to Chick- ... because red is the first color of the rainbow. So on Tuesday she would have a Orange ball. And so on.
Description : If there is a Yellow house on Bluebird Lane, a Green house on Orange Street, a Pink house on Kitten Road, a Black house on Whitehorse Pike and a Purple house on Firebird hill, where is the White house? -Riddles
Last Answer : Washington, D.C.
Description : Bases turns red litmus paper into?
Last Answer : Blue
Description : A student took Sodium Sulphate solution in a test tube and added Barium Chloride solution to it. He observed that an insoluble substance has formed. The colour and molecular formula of the insoluble substance is (a) Grey, Ba2SO4 (b) Yellow, Ba(SO4)2, (c) White, BaSO4 (d) Pink, BaSO4,
Last Answer : Answer: (c) White, BaSO4
Description : A yellow coloured crystalline substance gave a colourless gas `X` on reaction with fluorine, which is thermally stable and has octahedral geometry. `X
Last Answer : A yellow coloured crystalline substance gave a colourless gas `X` on reaction with fluorine, which is ... and has octahedral geometry. `X` can be
Last Answer : A yellow coloured crystalline substance gave a colourless gas `X` on reaction with fluorine, which is thermally stable ... `SF_(2)` D. `S_(2)F_(6)`
Description : A yellow metallic powder is burnt in a stream of fluorine to obtain a colourless gas X which is thermally stable and chemically inert. Its molecule ha
Last Answer : A yellow metallic powder is burnt in a stream of fluorine to obtain a colourless gas X which is thermally stable ... and NaC1` D. `SF_(4) and SF_(6)`
Description : Silver halides are used in photographic plates because they are (a) Oxidised in air (b) Colourless (c) Easily soluble in a hypo solution (d) Readily reduced by light
Last Answer : Ans:(d)
Description : `[X]+H_(2)SO_(4) rarr [Y]` a colourless gas with irritating smell `[Y] + K_(2)Cr_(2)O_(7) + H_(2)SO_(4) rarr` green solution `[X]` and `[Y]` are
Last Answer : `[X]+H_(2)SO_(4) rarr [Y]` a colourless gas with irritating smell `[Y] + K_(2)Cr_(2)O_(7) + H_(2)SO_(4) rarr ... 2-), H_(2)S` D. `CO_(3)^(2-), CO_(2)`
Description : Aqueous solution of raw sugar, when passed over beds of animal charcoal, becomes colourless. Explain.
Last Answer : Aqueous solution of raw sugar, when passed over beds of animal charcoal, becomes colourless. Explain.
Description : On passing H2 S through dilute HNO3 the colourless solution becomes turbid. Why ?
Last Answer : Ans. Due to formation of colloidal sol of Sulphur.
Description : The colour of phenolphthalein in acid?
Last Answer : No colour
Description : The colour of phenolphthalein in base?
Last Answer : Pink
Description : Which of the following is a natural dye? (1) Crystal violet (2) Aniline blue (3) Alizarin (4) Phenolphthalein
Last Answer : (3) Alizarin Explanation: Alizarin or 1,2- dihydroxyanthraquinone (also known as Mordant Red 11 and Turkey Red is an organic compound with formula C14H8O4 that has been used throughout history as a ... of the madder genus. In 1869, it became the first natural pigment to be duplicated synthetically.
Description : Which of the following purgatives undergoes enterohepatic circulation to produce prolonged action: A. Docusates B. Phenolphthalein C. Castor oil D. Mag. sulfate
Last Answer : B. Phenolphthalein
Description : Which of the following is a natural dye ? (1) Crystal violet (2) Aniline blue (3) Alizarin (4) Phenolphthalein
Last Answer : Alizarin
Description : Which of the statements is not true? (1) K2Cr2O7 solution becomes yellow on increasing the pH beyond 7 (2) On passing H2 S through acidified K2Cr2O7 solution, a milky colour is observed (3) Na2Cr2O7 is preferred over K2Cr2O7 in volumetric analysis (4) K2Cr2O7 solution in acidic medium is orange
Last Answer : Na2Cr2O7 is preferred over K2Cr2O7 in volumetric analysis
Description : There is a pink house made of bricks, a blue house made of bricks, an orange house made of bricks. What color bricks is a greenhouse made of? -Riddles
Last Answer : A greenhouse is made of glass or plastic, not bricks
Description : There is a pink house made of bricks, a blue house made of bricks, an orange house made of bricks. What color bricks is a greenhouse made of -Riddles
Description : A box contains 2 black, 3 orange and 4 pink ribbons. If two ribbons are drawn at random. What is the probability that both are orange? 1) 5/12 2) 1/13 3) 1/14 4) 1/12 5) 1/24
Last Answer : 4) 1/12
Description : In a contest, four fruits (an apple, a banana, an orange, and a pear) have been placed in four closed boxes (one fruit per box). People may guess which fruit is in which box. ... How many people have guessed three fruits correctly, and how many people have guessed four fruits correctly? -Riddles
Last Answer : It is not possible to guess only three fruits correctly: the fourth fruit is then correct too! So nobody has guessed three fruits correctly and 123-43-39-31 = 10 people have guessed four fruits correctly.
Description : Secondary data CANNOT be obtained from: A)trade journals B)government reports C)Yellow Pages D)surveys E)computerised data bases
Last Answer : D)surveys
Description : A cobalt chloride solution soaked into a piece of cotton can be used as an indicator for changes in humidity levels. Pink indicates a high-humidity environment and blue a low-humidity environment. What ... the cobalt's waters of hydration. z) This is an illustration of the Schrodinger principle.
Last Answer : ANSWER: Y -- THE LOSS AND READSORPTION OF THE COBALT'S WATERS OF HYDRATION.
Description : Which primary colors (blue, red, yellow) do i need to create pink color?
Last Answer : red and white will give you pink.
Description : I have a vine, 12 inches, multicoloured leaf, green/yellow/pink, smells funny.
Last Answer : Need Answer
Description : One day, a scientist was down in his personal lab. It was around 11 o'clock. He was working late on poisons and their antidotes. He was hungry, so he went to get a snack. Suddenly, he found ... and pink colored poisons in his lab. All of them were deadly. Which one did the scientist choose? -Riddles
Last Answer : The white one, since sugar is known as 'White Poison'.
Description : The pink house is made of pink, the blue house is made of blue, the yellow house is made of yellow, what is the green house made of? -Riddles
Last Answer : Glass!
Description : The colour of cyanomethmoglobin is (A) Pale yellow (B) Pink (C) Brown (D) Bright red
Last Answer : Answer : D
Description : Mark correct option a) Pink check slip for ordinary paid and unpaid bundle b) Blue check slip for Airmail c) White check slip for both express & differed bundle d) Marked 2 diagonal line green for local article, yellow for rajdhani & blue for metro bundle e) All the above
Last Answer : e) All the above
Description : Canthaxanthin pigment responsible for — colour in papaya a. White b. Yellow c. Red d. Pink
Last Answer : b. Yellow