Description : The pigment used in paints for corrosive resistance, is (A) White lead (B) Ferrous oxide (C) Zinc white (D) Red lead
Last Answer : Answer: Option D
Description : In paints, the pigment is responsible for (A) Durability (B) Colour (C) Smoothness (D) Glassy face
Last Answer : Answer: Option B
Description : Lead is (A) Not resistant to corrosion (B) Used as a cathodic material (C) Not used as pigment (in its compound forms) for paints (D) Used as a shock absorber (in mattress form) between the foundation and steel framework of skyscraper buildings
Last Answer : (D) Used as a shock absorber (in mattress form) between the foundation and steel framework of skyscraper buildings
Description : The commonly used drying oil for oil paints, is (A) Olive oil (B) Linseed oil (C) Kerosene oil (D) Acetate of lead
Description : Most commonly used solvent in oil paints, is (A) Petroleum (B) Spirit (C) Coal tar (D) Turpentine
Last Answer : Answer: Option A
Description : Commonly used thinner in (A) Lacquer paints, is alcohol (B) Cellulose paints is ethyl acetate (C) Oil paints, is naphtha (D) All the above
Description : The commonly used thinner in oil paints, is (A) Naphtha (B) Turpentine (C) Both (a) and (b) (D) None the these
Last Answer : Answer: Option C
Description : Cement paints usually (A) Contain hydrated lime (B) Contain 5% to 10% colour pigments (C) Contain 5% sodium chloride (D) All the above
Description : In order to provide colour, hardness and strength to the cement, the ingredient used is (a) Lime (b) Solica (c) Alumina (d) Iron oxide
Last Answer : (d) Iron oxide
Description : How would you describe a distance-versus-time graph of Amber's progress?
Last Answer : Need answer
Description : Titanium dioxide is a/an __________ colour pigment. (A) White (B) Black (C) Yellow (D) Blue
Last Answer : (A) White
Description : A reduction of nitrogen nutrient in plants: (A) Affects leaf colour (B) Reduces pigment concentration (C) Increase the visible reflectivity (D) All of these
Description : Paints with white lead base are suitable for painting of (A) Wood work (B) Iron work (C) Both wood work and iron work (D) None of the above
Description : Assertion A : Paints with white lead base are not recommended for painting of iron works. Reason R : Paints with white lead base do not check rusting of iron. Select your answer according to the coding system given below: ... of A (C) A is true but R is false (D) A is false but R is true
Description : The substances used in colour paints, fil- ters, plastics and other materials?
Last Answer : Pigments
Description : During smelting process, the combination of fuel in the furnace (A) Forms carbon dioxide (B) Carbon dioxide with carbon forms carbon mono-oxide (C) Carbon mono-oxide reacts with Fe2O3 to form iron and liberates CO2 (D) All the above
Description : Pick up the correct statement from the following: (A) Blisters in the finished wrought iron, are caused due to the reaction between oxide of iron and carbon (B) The edges of a finished wrought iron ... shortage (C) Pig iron (charcoal) is manufactured from magnetic ore (Fe3O4) (D) All the above
Description : Which of the following imparts a blue colour to glass? (1) Cobalt oxide (2) Copper oxide (3) Iron oxide (4) Nickel oxide
Last Answer : (1) Cobalt oxide Explanation: The addition of oxides, sulfides, salts, and other compounds of different metals to molten glass at the time of manufacture adds colour to glass. The introduction of ... colour; copper oxide: turquoise; chromium: dark green to black; cadmium sulfide: deep yellow, etc.
Description : Adding which substance gives blue colour to glass? (1) Manganese oxide (2) Cobalt oxide (3) Chromium oxide (4) Iron oxide
Last Answer : (2) Cobalt oxide Explanation: Cobalt is the strongest of the coloring oxides, giving a range of blues in most glasses. It is such a powerful colorant that only a few parts per million is needed to produce a light blue color such as the shade used for certain bottled waters.
Description : White colour of soil is due to the presence of – a) Silica b) Iron c) Manganese oxide d) All of these
Last Answer : c) Manganese oxide
Description : Generally metallic oxides are basic and non-metallic are acidic in nature. Solution of which of the following oxides in water will change the colour of blue litmus to red? a)sulphur dioxide b)Magnesium oxide c)iron oxide d)copper oxide
Last Answer : a)sulphur dioxide
Description : Which of the following imparts a blue colour to glass ? (1) Cabalt oxide (2) Copper oxide (3) Iron oxide (4) Nickel oxide
Last Answer : Cabalt oxide
Description : Which oxide of the following metals is often used as a pigment in white paint? w) titanium x) cobalt y) nickel z) vanadium
Last Answer : ANSWER: W -- TITANIUM
Description : When black copper oxide placed in a beaker is treated with dilute HCl, its colour changes to......... a) Whiteb) Red c) Blue-green d) No change
Last Answer : c) Blue-green
Description : In which part of the eye lies the pigment, that decides the colour of the eyes of a person? -Do You Know?
Last Answer : answer:
Description : Respiratory pigment Fe containing but red in colour `:-`
Last Answer : Respiratory pigment Fe containing but red in colour `:-` A. Haemocyanin (Molluscas) B. Haemoglobin ... ) C. Chlorocruorin (Some annelids) D. None
Description : A pigment responsible for red colour in tomato
Last Answer : Ans. Lycopene
Description : The pigment which gives colour to the human skin is – (1) Melanin (2) Rhodopsin (3) Iodopsin (4) Anthocyanin
Last Answer : (1) Melanin Explanation: Human skin color is primarily due to the presence of melanin in the skin. Skin color ranges from almost black to white with a pinkish tinge due to blood vessels underneath. In animals melanin pigments are derivatives of the amino acid tyrosine.
Description : In which part of the eye lies the pigment that decides the colour of the eyes of a person’? (1) Corea (2) Choroid (3) Iris (4) Vitreous body
Last Answer : (3) Iris Explanation: The iris is a thin, circular structure in the eye, responsible for controlling the diameter and size of the pupils and thus the amount of light reaching the retina. "Eye color" is ... the center of the iris, known as the pupil. The larger the pupil, the more light can enter,
Description : The colour of the eye depends upon the pigment present in - (1) cornea (2) iris (3) rods (4) cones
Last Answer : (2) iris Explanation: Eye colour is a polygenic phenotypic character determined by 2 distinct factors: the pigmentation of the eye's iris and the frequency-dependence of the scattering of light by the ... iris stroma (located at the front of the iris), and the cellular density of the stroma.
Description : The brownish colour of Brown Algae is due to presence of ...... pigment?
Last Answer : Xanthophyll
Description : Which is the pigment giving yellow colour to Milk?
Last Answer : Carotene
Description : In which part of the eye lies the pigment that decides the colour of the eyes of a person--? A. Retina B. Iris (Answer) C. Cornea D. Pupal
Last Answer : B. Iris (Answer)
Description : Which one of the following is the correct difference between rod cells and cone cells of our retina? Rod cells Cone cells (a) Overall Vision in poor Colour vision function light and detailed ... of retina all over retina (c) Visual acuity High Low (d) Visual pigment Iodopsin Rhodopsin contained
Last Answer : (a) Overall Vision in poor Colour vision function
Description : Canthaxanthin pigment responsible for — colour in papaya a. White b. Yellow c. Red d. Pink
Last Answer : b. Yellow
Description : In which part of the eye lies the pigment, that decides the colour of the eyes of a person?
Last Answer : Choroid
Description : Pigment which given colour to Human body
Last Answer : Melanin
Description : Xanthophyll is a pigment having (A) Yellow colour (B) Green colour (C) Red colour D) Blue colour
Last Answer : (A) Yellow colour
Description : The pigment which gives colour to the human skin is (1) Melanin (2) Rhodopsin (3) Iodopsin (4) Anthocyanin
Description : The colour of the eye depends upon the pigment present in (1) cornea (2) iris (3) rods (4) cones
Last Answer : iris
Description : In which part of the eye lies the pigment that decides the colour of the eyes of a person? (1) Cornea (2) Choroid (3) Iris (4) Vitreous body
Last Answer : Iris
Description : Pebble mills are tumbling mills widely used for grinding in the manufacture of paints & pigments and cosmetic industries, where iron contamination in the product is highly objectionable. Pebbles used in pebble mill are made of (A) Bronze (B) Stainless steel (C) Flint or porcelain (D) Concrete
Last Answer : (C) Flint or porcelain
Description : Carbon disulphide is mainly used in the production of(A) Viscose rayon (B) Corundum (C) Plasticiser for unsaturated polyester (D) Paints
Last Answer : (A) Viscose rayon
Description : Hot coffee is poured simultaneously in four metallic tumblers painted outside with different types of paints. After some time, the coffee will be found coldest in the tumbler painted (a) rough white (b) shining white (c) rough black (d) shining black
Last Answer : Ans:(c)
Description : A tank painted with which of the following coloured paints, would heat up maximum by radiation from sun? (A) Yellow paint (B) White paint (C) Black paint (D) Grey paint
Last Answer : (C) Black paint
Description : When iron oxide is heated with carbon iron is produced the word equation?
Description : Which of the following is an adsorbent for removal of nitrogen oxides from gas/air? (A) Active carbon (B) Silica gel (C) Bog iron (iron oxide) (D) Pulverised limestone
Last Answer : (B) Silica gel
Description : Catalyst used in the 'catalytic converter' employed in automobile exhaust line for complete combustion/oxidation of carbon monoxide, nitrogen oxides and hydrocarbons is (A) Alumina (B) Platinum (C) Vanadium pentoxide (D) Iron oxide
Last Answer : Option B
Description : Which of the following materials are used in the manufacture of pig iron from iron ore? w) Limestone and carbon x) Calcium oxide and oxygen y) Chromium and nickel z) Oxygen and sulfur dioxide
Last Answer : ANSWER: W -- LIMESTONE AND CARBON
Description : Ground glass (A) Is made by grinding its one side (B) Is made by melting powdered glass paints surface (C) Is used for getting light without transparency (D) All the above