Various fungi are known to accumulate considerable quantities of divalent metals, e.g. (a) Cd (b) Zn (d) All of these (c) Pb

1 Answer

Answer :

Ans. ((d))

Related questions

Description : The newspaper contains one of the following toxic material a) Mg b) Cd c) Pb d) Hg. 

Last Answer : b) Cd 

Description : How many of the following metals can be extracted buy carbon reduction method ? Na,Al,Mg,Sn,Fe,Pb,Zn,Ca

Last Answer : How many of the following metals can be extracted buy carbon reduction method ? Na,Al,Mg,Sn,Fe,Pb,Zn,Ca

Description : Among the metals Na,Mg ,Al,Zn,Cu,Sn ,Fe and Pb number of metals that can be ectreated by the eletroysis ,even from aqueos solution,is………………….

Last Answer : Among the metals Na,Mg ,Al,Zn,Cu,Sn ,Fe and Pb number of metals that can be ectreated by the eletroysis ,even from aqueos solution,is………………….

Description : Number of metals among following which are obatained by electromentallurgy in molten state are Li, Ba, Na,Al, Fe, Cu, Pb, Sn, Ag, Zn, Ca, Mg.

Last Answer : Number of metals among following which are obatained by electromentallurgy in molten state are Li, Ba, Na,Al, Fe, Cu, Pb, Sn, Ag, Zn, Ca, Mg.

Description : Hot dipping process is used for coating a low melting point metal (e.g. Pb, Sn, Zn) on iron, steel & copper having relatively higher melting points. Which of the following is not a hot dipping process? (A) Galvanising (B) Tinning (C) Sherardizing (D) None of these

Last Answer : (C) Sherardizing

Description : A weed accumulate over 550 ppm of Zn in its dry matter a). Digitaria b). Setaria lutescens c). Portulaca d). Chenopodium

Last Answer : b). Setaria lutescens

Description : Why are Zn , Cd , Hg are not regarded as transition metals ? 

Last Answer : Ans: It is because neither they nor their ions have incompletely filled d- orbitals . 

Description : Which element is macronutrient? a. Mo b. Mn c. Zn d. Ca

Last Answer : d. Ca

Description : Identify the type of reaction(s) in the following equations. (i)CH4 + 2O2 CO2 + 2 H2O (ii) Pb(NO3)2 + 2KI ——–>Pbl2 + 2KNOs (iii) CaO + H2O ——–> Ca(OH)2 (iv) CuSO4 + Zn ——–> ZnSO4 + Cu -Chemistry

Last Answer : Answer. (i) Combustion reaction and oxidation reaction. (ii)Double displacement reaction and precipitation reaction. (iii) Combination reaction. (iv) Displacement reaction.

Description : Which division of fungi includes ‘club fungi’? (a) Zygomycota (b) Ascomycota (c) Deuteromycota (d) Basidiomycota

Last Answer : Ans. ((d))

Description : Is it possible to accumulate wealth of knowledge scattered in various languages / cultures?

Last Answer : Anything is possible and don’t let anyone make you think otherwise.

Description : Leaching can be used for the extraction of which metals (i) Pb (ii) Al (iii) Ag (iv) Au

Last Answer : Leaching can be used for the extraction of which metals (i) Pb (ii) Al (iii) Ag (iv) Au A. (ii) (iii) and ... iii) C. (ii) and (iv) D. (iii) and (iv)

Description : Which of the following metals is used in Space Crafts to withstand high temperatures? (1) Fe (2) Ti (3) Ni (4) Pb

Last Answer : (2) Ti Explanation: Titanium alloy, which has high corrosion resistance, high specific strength, and good heat resistance, is used for different spacecraft parts including outer fuel tank sheathing and wings. It is extremely strong at high temperatures.

Description : Which of the following metals is used in Space Crafts to withstand high temperatures ? (1) Fe (2) Ti (3) Ni (4) Pb

Last Answer : Ti

Description : Explain various kinds of sclereids with examples

Last Answer : Ans: Sclereids are relatively short sclerenchyma cells which occur either singly or in groups in various parts of the plant body. They are of the following types. 1. Brachysclereids: These are ... that are extended into even intercellular spaces. Ex: Leaves of Olea and aerial roots of Monstera

Description : Describe the various outgrowths of seed.

Last Answer : Ans: The outgrowths of seed are Caruncle and Aril. Caruncle: It is developed from integumentary cells of micropylar region. It is spongy and helps in absorbing water during seed germination. It is seen in ... commonly called as mace and is used as spice. In Pithecalobium, it is edible and spongy. 

Description : What is placentation? Describe the various types of placentation in plants. 

Last Answer : Ans: It is arrangement of ovules in the ovary. Part of the ovary from which ovules arise is called as placenta. Placentation is of the following types. I. Marginal placentation: Ovules are borne along ... : One or few ovules arise from the base of the unilocular ovary. Ex: Tridax, Helianthus. 

Description : Describe various types of aestivations with the help of suitable examples.

Last Answer : Ans: Arrangement of perianth lobes in bud condition is called as aestivation. They are of the following types. I. Valvate: Perianth lobes of cycle are arranged side by side but not overlapped. ... remaining one has one margin inside and one margin outside. Ex: Calyx of Ipomoea and Catharanthus. 

Description : Describe various types of symmetry of flower based on the arrangement of floral parts.

Last Answer : Ans: On the basis of this character, floral symmetry is of the following three types. I. Spiral : The free sepals, petals, stamens and carpels are arranged spirally over the conical or convex ... Cyclic: All the four floral parts are arranged in cycles over the thalamus. Ex: Hibiscus, Datura

Description : Two equal chords AB and CD of a circle when produced intersect at a point P. Prove that PB = PD. -Maths 9th

Last Answer : According to question prove that PB = PD.

Description : Two equal chords AB and CD of a circle when produced intersect at a point P. Prove that PB = PD. -Maths 9th

Last Answer : According to question prove that PB = PD.

Description : Formation of diploid embryosac from diploid vegetative structure, e.g., nucellus or integument etc., without meiosis is called: (a) Apospory (b) Apomixis (c) Diplospory (d) Adventives polyembryony

Last Answer : Ans. ((a))

Description : To obtain haploid plants, we culture _________ e. Entire anther f. Nucleus g. Embryo h. Apical bud

Last Answer : e. Entire anther

Description : Which of the following metals are present in hemoglobin and chlorophyll, respectively? (1) Fe and Mg (2) Fe and Zn (3) Mg and Zn (4) Zn and Mg

Last Answer : (1) Fe and Mg Explanation: Fe and Mg metals are present in hemoglobin and Chlorophyll respectively.

Description : Devices which convert various physical quantities into electrical voltage are known as (a) Control system (b) sensors (c) level sensors (d) LDR

Last Answer : (b) sensors

Last Answer : All the elements that have two (2) components are called divalent elements. Such as oxygen.

Description : (A) Carbenes act as free radicals. (R) Only triplet carbenes act as biradical (divalent free radical).

Last Answer : (A) Carbenes act as free radicals. (R) Only triplet carbenes act as biradical (divalent free radical). A. ... IF (A) is incorrect but (R) is correct.

Description : Divalent cations are generally eliminated in marine fishes through

Last Answer : Divalent cations are generally eliminated in marine fishes through A. Gill membrane B. Anal membrane C. Fecal matter D. Oral membrane

Description : Oxygen is always divalent while sulphur can form 2, 4 and 6 bonds because

Last Answer : Oxygen is always divalent while sulphur can form 2, 4 and 6 bonds because A. High ... Vacant d-orbitals in the valency shell of Sulphur

Description : All the following statements regarding calcium are correct except (A) It diffuses as a divalent cation (B) It freely diffuses across the endoplasmic reticulum of muscle cells (C) It can exist in the blood as ionic form and also protein bound (D) It is found in high concentration in bones

Last Answer : Answer : B

Description : Semiconductor germanium and silicon are (a) Pentavalent (b) trivalent (c) divalent (d) tetravalent

Last Answer : (d) tetravalent

Description : In n type semi conductor added impurity is (A) pentavalent. (B) divalent. (C) tetravalent. (D) trivalent.

Last Answer : (A) pentavalent.

Description : How many grams of ZnCl2 are formed from150 g of Zn and 73 g of HCl?

Last Answer : 136,315 g ZnCl are obtained.

Description : As the surface area of the Zn(s) used in the reaction Zn(s) + 2HCl(aq)--> ZnCl2(aq) + H2(g) is increased, the rate of the reaction willIncreaseDecreaseRemain the Same?

Last Answer : An increase in surface area means an increase in the rate of reaction.

Description : What information do you get from the following chemical equation: Zn(s) + 2HCl (dil) → ZnCl2 (aq) + H2(g)

Last Answer : This gives zinc chloride and hydrogen. The word equation is: Zinc + Hydrochloric acid → Zinc chloride + Hydrogen Formulae for the products are ZnCl2 and H2

Description : In a heating process, a heat flow diagram in which the quantities of heat in the various items of a heat balance are represented by the width of a band is called the (A) Ostwald chart (B) Cox chart (C) Sankey diagram (D) None of these

Last Answer : (C) Sankey diagram

Description : Mention the various types of buses in power system with specified quantities for each bus.

Last Answer : • Load bus or PQ-bus (P and Q are specified- Voltage magnitude and angle are to be obtained) • Generator bus or voltage controlled bus or PV bus (P and V are specified- Voltage angle and Q are to be obtained)

Description : Which of the following is known as a urine factory ?

Last Answer : It is called as a tree making factory.

Description : The process through which the amount of DNA, RNA and protein can be known at a time is called (a) Autoradiography (b) Tissue culture (c) Cellular fractioning (d) Phase contrast microscopy

Last Answer : Ans. ((c))

Description : The process by which the amount of DNA, RNA and protein can be known at a time is: (a) Cell fractionation (b) Autoradiography (c) Phase-contrast microscopy (d) Tissue culture

Last Answer : Ans. ((b))

Description : A plant having two types of haploid structures in its life cycle is known as: (a) Haplobiontic (b) Diplobiontic (c) Haplontic (d) Diplontic

Last Answer : Ans. ((a))

Description : Pmcess of water exudation through hydathodes is known as: (a) Guttation (b) Transpiration (c) Evaporation (d) Bleeding

Last Answer : Ans. ((a))

Description : Which of the following species of Pinus is commonly known as chir pine ......... a) P. roxburghii b) P. wallichiana c) P. insularis d) P. gerardiana

Last Answer : a) P. roxburghii

Description : Cycadeoidea is also known as…. a)Lyginopteris b)Bennettites c) Pinus d)Gnetum

Last Answer : b)Bennettites

Description : When many islands of phloem embedded in xylem layer due to anomalous activity of cambium are formed such phloems are known as

Last Answer : When many islands of phloem embedded in xylem layer due to anomalous activity of cambium are formed such phloems are known as – Included phloem

Description : The living cells having thickening at the corners due to deposition of pectin are known as

Last Answer : The living cells having thickening at the corners due to deposition of pectin are known as – Collenchyma cells.

Description : When the diploid embryosac is formed from the cells of nucellus, it is known as

Last Answer : When the diploid embryosac is formed from the cells of nucellus, it is known as – Apospory

Description : What are derived quantities and derived units? State two examples. State the corresponding S.L. and C.G.S. units of the examples.

Last Answer : What are derived quantities and derived units? State two examples. State the corresponding S.L. and C.G.S. units of the examples.

Description : What are fundamental quantities? State two examples of fundamental quantities. Write their S.J. and C.G.S. units.

Last Answer : What are fundamental quantities? State two examples of fundamental quantities. Write their S.J. and C.G.S. units.