MCQ 119: When magnesium is burnt on Bunsen burner it gives flame of color A. bright white B. off white C. cream white D. ash white

Q: How can a mixture of benzoic acid and sodium be separated, given that sodium explodes strongly when…

A: Answer is as Follows :

Q: lunderbor | Germany together which of the fellowing is the Compond with sthongest digdl the U.S.…

A: Dipole moment is the multiplication of charge and distance between atoms

Q: complete the reduction reaction by substituting the groups R, Ar and X. using the reaction given in…

A: The reagent "LiAlH4" always functions as "reducing reagent". Any functional group gets reduced by…

Q: How does plasma make a campfire flame orange ?

A: Plasma is an ionized gas which has charged ions (positive ions, free electrons); otherwise described…

Q: What is the molecular geometry of the SbF52−ion?(a) octahedral(b) trigonal bipyramidal(c) square…

A: Lewis structures (Lewis dot structures ) are diagrams that represent the valence electrons of atoms…

Q: Which ion(s) are responsible for making water “hard”? a. None of these ions are responsible for…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: How does the electron structure of an isolated atom differ from that of a solid material? Select the…

A: The electron structure of an isolated atom differ from that of solid state in the following ways: In…

Q: 1. Suppose there is an atom of oxygen, containing eight protons and eight neutrons in the nucleus,…

A: 1. An oxygen atom has eight protons and eight neutrons in the nucleus. Another four neutrons are…

Q: MCQ 180: Down the Halogen Group (Group-VII), the reactivity A. increases B. decreases C. becomes…

A: Given  Element = Group ( VII ) Element                = F ,Cl ,Br ,I ,At  Reactivity order = ?

Q: MCQ 122: What is correct about halogens? A. they loose one electron while reacting with metal atoms…

A: We know that,. Halogens are F,Cl,Br,I

Q: H₂N. Br Br HO NO₂ HN O

A: Here we have to determine the azo dye formed in the reaction of the following given compounds.

Q: How many unpaired d electrons are present in the orbital diagram of Mo? O 4 O 5 O 1

A: Option C is correct answer. 5 d unpaired electrons present in Mo.

Q: MCQ 179: The temperature at which thermal decomposition of metal nitrates (eg. Ca(NO)) of Group-Il…

A: Group II metals are called as alkaline earth metals. They form metal nitrate ( e.g. Ca(NO3)2.All the…

Q: [COC14]¯ (alc) + 6H,O(alc) [Co(H,O),J?+ (alc) + 4C1¯(alc) deep blue rose pink

A: Exothermic: Heat is evolved. This is when product is more stable than the reactant   Endothermic:…

Q: ... he cell length (short side of the right triangle) is 6.67 A. What is the length of the long side…

A:

Q: One of Prof Cunningham's former students wrote his doctoral dissertation about a new technology to…

A: From the given data,

Q: Draw all possible molecular structures for the compound with empirical formula [Mn(en)2(NO2)2]. From…

A:

Q: Copper is a common metal used in electrical circuits. Why are metals like Cu generally good…

A:

Q: 1. What is the number of unpaired electrons per atom metal in this compound [Fe(en)2Cl2]Cl ?

A: ANSWER: Step 1: The [Fe(en2Cl2] Cl is a low-spin complex because of the bonding with strong-field…

Q: MCQ 104: When calcium oxide is burned with clay its makes A. cement B. steel C. calcium carbonate D.…

A: Cement is formed when calcium oxide is burned with Clay .  clay( SiO2)  is used as a binder.

Q: Write out the Kroll Process and the Mond process. What are they used for and why? (Inorganic…

A: The Kroll process is a pyrometallurgical industrial process used to produce metallic titanium from…

Q: B/Explain LNG, yg LPG, NGL , CNG ?

A: All are natural gas. Full form of these Gases: LNG(liquified natural gas ) LPG(liquified petroleum…

Q: Calculate and compare the number of strands of PVA in 1.00 L of 4% PVA and the number of…

A:

Q: 11. What is the colour observed in a flame test to indicate the presence of copper(IlI) ions in a…

A: In flame test colour is observed due excitation of the electrons from ground electronic level to the…

Q: 5. Which of these two metals will be harder? Explain your choice. Na and Cs

A: Na and Cs are the elements in Alkaline Metals. The factors that affect the hardness are bond…

Q: 38) The reaction of acidified potassium permanganate, KMnO, with propene will give a) CH,CO,H only…

A: KMnO4 is a good oxidising agent

Q: 21 20 JgVI Jaåll :The application of (N-8) rule for group IV elements indicate That silicon is…

A: Octet Rule: Octet rule states that an atom which has eight (8) electrons in its valence shell is…

Q: Draw the LEDS , then determine the Geometry/Shape of Ozone. Give a very short explanation.

A: In this question, we have to Draw the Lewis dot structure, then determine the Geometry/Shape of…

Q: Which compound is impossible? 3. A LiCl2 B Naz0 С СазР2 D ZnS

A: The molecule forms from their elemental atom by their valency . During the formation of the compound…

Q: MCQ 168: Nitrates (-NO) of Group-II down the group require for their decomposition, is high in A.…

A: A) pressure   B) TEMPERATURE  C) ELECTRICITY  D) ALTITUDE

Q: (a) Why is ZnO called a amphoteric oxide? Name another amphoteric oxide(b) What are alkali’s? Give…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: Which will yield high intensity of light?   a. concentrated acetic acid b. 25% acetic acid c.…

A: Concentration is related to the intensity leaving out of the sample. In the given question different…

Q: Using bonding principles, account for the decrease in the melting points of the alkali metals. (b)…

A: Melting point depends upon the bonding between the electrons stronger the bonding higher will be the…

Q: True or false? SEM can investigate the crystalline structure of an object

A: SEM microscope can be defined as a  microscope that scan the image of an object.

Q: A DIAGNOSTIC TEST 39 59. Which data must be collected to calculate the enthalpy of reaction? (A)…

A:

Q: 24.) What is the molecular geometry of CCl4? A) tetrahedral B) trigonal planar C) linear D) bent E)…

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: 1. Which does not belong to the group?* Hg₂ + 2Cl⁻¹ ⇌ HgCl₂ Ag⁺¹ + Cl⁻¹ ⇌ AgCl₂ Pb⁺² + 2Cl⁻¹ ⇌ PbCl₂…

A:

Q: Classify the relationship between the two structures show and Br

A: Constitutional isomers have the same formula but not the same connectivity of atoms. Enantiomers are…

Q: Q2.(d) Explain why ultra-pure substrate materials and stringent health and safety requirements are…

A: Fabrication of semiconductor materials takes place in a cleanroom.While silicon-based semiconductor…

Q: Br CH3 CI- rer Retry Entire Group 6 more group attempts remaining

A:

Q: Draw the structure of SF6

A: Sulfur is the central atom that is bonded with six fluorine atoms; the molecular geometry of XY6 is…

Q: Which one of the following is the most basic oxide? a. Bi2O3 b. N2O3 c. P4O6 d. As4O6

A: The oxides of the metals are basic in nature and the oxides of nonmetals are acidic in nature.

Q: 1. Part A.) Which one is a paramagnetic molecule? (unpaired electrons) Select all that аpply. A.…

A: A. The valence shell electronic configuration of the given species :  Mo^3+ : 4d^3 Se^2- : 4s^24p^6…

Q: Why is color not an accurate property to use to identify most minerals?

A: Color is not an accurate property to use to identify most minerals.

Q: H₂N. I CN OH OH NO₂

A:

Q: Glass, quartz, and cristobalite have the same chemical formula, SiO2. Given the XRD diffractograms…

A: XRD diffraction is X-Ray diffraction used for studying the crystalline structure of the materials.…

Q: Explain infrared spectrum in detailed analysis.

A: The functional group is a key component associated with a molecule and they control the overall…

Q: What is the geometry of the synthesized thermochromic material at low temperatures? a. Octahedral O…

A: The geometry of the synthesized thermochromic material at low temperature is Square planar.…