Question 1 ( 1.0 marks)
What is the coordination number of each type of ions in a rock-salt type crystal structure?
Question 2 ( 1.0 marks)
Define the term ‘order of reaction’ for chemical reactions.
Question 3 ( 1.0 marks)
What causes Brownian movement in a colloidal solution?
Question 4 ( 1.0 marks)
In which one of the two structures, and , the bond angle has a higher value? Question 5 ( 1.0 marks)
Write the IUPAC name of the following compound:
Question 6 ( 1.0 marks)
Arrange the following compounds in an increasing order of their acid strengths:
(CH3)2CHCOOH, CH3CH2CH(Br)COOH, CH3CH(Br)CH2COOH
Question 7 ( 1.0 marks)
Write a chemical reaction in which the iodide ion replaces the diazonium group in a diazonium salt.
Question 8 ( 1.0 marks)
Name a substance that can be used as an antiseptic as well as a disinfectant.
Questions
Question 9 ( 2.0 marks)
Explain as to why haloarenes are much less reactive than haloalkanes towards nucleophilic substitution reactions.
OR
Which compound in each of the following pairs will react faster in SN2 reaction with −OH? Why?
(i) CH3Br or CH3I
(ii) (CH3)3CCl or CH3Cl
Question 10 ( 2.0 marks)
(a) State the IUPAC name of the following compound:
(b) Complete the following chemical equation:
CH3CH2CH=CH2 + HBr
Question 11 ( 2.0 marks)
State Henry’s law correlating the pressure of a gas and its solubility in a solvent and mention two applications for the law.
Question 12 ( 2.0 marks)
A first order decomposition reaction takes 40 minutes for 30% decomposition. Calculate its value.
Question 13 ( 2.0 marks)
What is meant by the ‘rate constant, k’ of a reaction? If the concentration be expressed in mol L−1 units and time in seconds, what would be the units for k (i) for a zero-order reaction and (ii) for a first-order reaction?
Question 14 ( 2.0 marks)
Define the following terms in relation to proteins:
(i) Peptide linkage
(ii) Denaturation
Question 15 ( 2.0 marks)
List the reactions of glucose which cannot be explained by its open-chain structure.
Question 16 ( 2.0 marks)
Assign a reason for each of the following statements:
(i) Ammonia is a stronger base than phosphine.
(ii) Sulphur in vapour state exhibits a paramagnetic behaviour.
Question 17 ( 2.0 marks)
Draw the structure of the following molecules:
(i) SF4
(ii) XeF4
Question 18 ( 2.0 marks)
What are biodegradable and non-biodegradable detergents? Give one example of each class.
Questions
Question 19 ( 3.0 marks)
What is semiconductor? Describe the two main types of semiconductors and explain mechanisms for their conduction.
Question 20 ( 3.0 marks)
Calculate the temperature at which a solution containing 54 g of glucose, (C6H12O6), in 250 g of water will freeze.
(Kf for water = 1.86 K mol−1 kg)
Question 21 ( 3.0 marks)
What are lyophilic and lyophobic sols? Give one example of each type. Which one of these two types of sols is easily coagulated and why?
Question 22 ( 3.0 marks)
State briefly the principles which serve as basis for the following operations in metallurgy:
(i) Froth floatation process
(ii) Zone refining
(iii) Refining by liquation
Question 23 ( 3.0 marks)
Write chemical equations for the following processes:
(i) Chlorine reacts with a hot concentrated solution of sodium hydroxide
(ii) Orthophosphorous acid is heated
(iii) PtF6 and xenon are mixed together
OR
Complete the following chemical equations:
(i) Ca3P2(s) + H2O(l) →……..
(iii) F2(g) + H2O(l) →……..
Question 24 ( 3.0 marks)
(a) What is a ligand? Give an example of a bidentate ligand.
(b) Explain as to how the two complexes of nickel, [Ni(CN)4]2− and Ni(CO)4, have different structures but do not differ in their magnetic behaviour. (Ni = 28)
Question 25 ( 3.0 marks)
Name the reagents which are used in the following conversions:
(i) A primary alcohol to an aldehyde
(ii) Butan-2-one to butan-2-ol
(iii) Phenol to 2, 4, 6-tribromophenol
Question 26 ( 3.0 marks)
Account for the following
Kevin Laverty Kristen Spangler, MBA Email: laverty@u.washington.edu Office: UWB2-325 Phone: 425.352.5338 Email: kspangler@uwb.edu Office: UWB1-380 Phone: 425.352.3664 Office Hours: TU & TH Noon.-1pm TU & TH 8-9 pm (by appointment only) Or by appointment Office Hours: TU & TH 9:30am-1pm TU & TH 3:30pm-5:30pm Or by appointment Text: Hitt, Ireland and Hoskisson, Strategic Management, 7th edition Case Packet: Available at the Bookstore COURSE DESCRIPTION In this course we will…
HIST 121 Middle Eastern History, 1200 to 1800 Fall 2010 Instructor: Prof. Fariba Zarinebaf (Faribaz@ucr.edu) Class hours: T-TH 11:10- 12:30 Surge 171 Office Hours (HMNSS 5506): T-Th 2:00-3:30 Course description: This class offers a survey of Middle Eastern history from 1200 to 1800. After a brief introduction to the rise and expansion of Islam, the first part of this class will cover the rise of Turkic dynasties and the impact of the Mongol invasions and rule on Islamic societies. The second…
IEEE TRANSACTIONS ON PARALLEL AND DISTRIBUTED SYSTEMS, VOL. 24, NO. 12, DECEMBER 2013 2365 Dynamic Scheduling for Wireless Data Center Networks Yong Cui, Member, IEEE, Hongyi Wang, Xiuzhen Cheng, Senior Member, IEEE, Dan Li, Member, IEEE, and Antti Yla¨-Ja¨a¨ski Abstract—Unbalanced traffic demands of different data center applications are an important issue in designing data center networks (DCN). In this paper, we present our exploratory investigation on a hybrid DCN solution of utilizing wireless…
colleagues, which I hate even more. I will listen to all (well, almost all) excuses with a sympathetic ear & even shed a crocodile tear or two. Do not lose this file. CLASS TIMES: We meet M-Th from 8:00a to 12:15p. The operative time is 8:00a. We start class promptly at 8:00a. The second operative time is 12:15p. We do not sneak out of class before dismissed, unless Sensei says class is over. We might have a last minute quiz. DATES: As college students, you are responsible for all relevant…
10/EH 10/17/02 12:46 PM Page 301 Page 1 of 5 The Impact of Colonialism on African Life MAIN IDEA WHY IT MATTERS NOW The slave trade and colonialism destroyed traditional cultures and social systems in Africa south of the Sahara. Africa is still recovering from the effects of the slave trade and colonialism. PALACE, THE ROYAL KONGO, JULY 6, 1526 TERMS & NAMES missionary Hutu Tutsi . of wealth reat deal g a o g n o . K mains firm can bring position re ’s g in k e But th er sent a lett…
SIMESTER Sloan School of Management, MIT, 38 Memorial Drive, E56-305, Cambridge, MA 02142 E-mail: simester@mit.edu Abstract. Although the use of $9 price endings is widespread amongst US retailers there is little evidence of their effectiveness. In this paper, we present a series of three field-studies in which price endings were experimentally manipulated. The data yield two conclusions. First, use of a $9 price ending increased demand in all three experiments. Second, the increase in demand was stronger…
region of UK. It is viewed that the Tesco Company has approximately 360000 workers globally. In UK, stores of the UK vary from small domestic sites of the Tesco Express to the large Tesco superstores and Extras. It is viewed that Tesco operates in almost 12 countries apart from UK, comprising Japan, China and Turkey. The Tesco Company has currently opened the stores in the US. This global expansion is considered as the part of the Tesco plan to grow and diversify the business. It is viewed that in its…