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Correct option (3)  Bauxite

Explanation:

Calamine : ZnCO₃

  Siderite :  FeCO₃

Bauxite :   AlO_x(OH)_3-2x(0 < x < 1)

Malachite  :  CuCO₃ Cu (OH)₂

Correct option (3) C > Si > Ge  ≈ Sn

Explanation:

in this order of catenation is asked. catenation is a self-linking property here and for group 14 : self -linking is through covalent bonding.

C > Si > Ge ≈ Sn

in ethene is 2p-2p ouerlapping further 3p-3p, 4p – 4p and soon and the extent of overlapping is more in 2p-2p > 3p-3p >. 4p–4p  ≈ 5p-5p. 

Correct option: (3) C > Si > S > P

Explanation:

Fact

Correct option:  (1) Brownian motion of colloidal particles does not depend on the size of particles.

Explanation:

(1) Brownian motion of colloidal particles does not depend on the size of particles.

(2) Adsorption is endothermic process.

(3) Colloidal medicines are better because of their small surface area.

(4) Electrophoresis can be used for ppt of lyophobic colloid.

Correct answer is (D) Surfactant

Correct option (1) cryolite

Explanation:

Cujolite = Na₃AlF₆ 

Contain fluoride

Correct option (4) n-butylamine

Explanation:

n – Butyl amine 

CH₃–CH₂–CH₂–CH₂–NH₂ 

only unhindered 1º Amines are products of this reaction

Correct answer is (C) Starch

The correct option is (1) n-Butylamine.

Explanation:

Gabriel phthalimide reaction is used to prepare primary unhindered amine only.

Correct option (2) solid is dispersed in gas

Explanation:

Acrosol = solid is dispersed in gas 

Correct answer is (A) Soap

The correct option is (1) D- glucose.

Explanation:

Hydrolysis of maltose with dilute HCl gives only D- glucose.

Correct answer is (D) Zinc

Correct option: (2) 2-Chloro 1-methyl 4-nitro benzene

Correct option: (1)

Correct answer is (A) Nickel

Correct option  (2) Higher the value of K_H at a given pressure, higher is the solubility of the gas in the liquids. 

Explanation:

Liquid solution   P_gas  = K_H x X_gas  

The dimension of any physical quantity expresses its dependence on the base quantities as a product of symbols (or powers of symbols) representing the base quantities.

Correct Answer is: (c) If R₁ and R₂ are unequal, the focal length would depend on the direction in which light travels through the lens. 

Correct Answer is: (d) 0, -Q/3, Q/3, 2Q/3, -2Q/3 and 0

Correct Answer is: (b) n₁/n₃ 

Correct Answer is: (a) 0, 0, 0, Q, –Q and 0 

Correct Answer is (c) 100 mA 

Correct Answer is: (b) 1 A

Correct Answer is: (a) 0, –Q, Q, 0, 0 and 0 

Correct Answer is: (c) 100 V 

A crossed cheque is a cheque that has been marked to specify an instruction about the way it is to be redeemed. A common instruction is to specify that it must be deposited directly into an account with a bank and not immediately en -cashed by a bank over the counter. Crossed cheque means drawing two parallel lines on the upper left hand corner of the cheque and writing the words ‘A/c Payee’.

Facilities provided by banks regarding opening of account by NRIs to deposit their earnings:

• NRE ACCOUNT (Non - Resident External Account)

An NRE account can be opened by any person who is residing outside India. NRIs (Non - Resident Indians) having NRE account in India are permitted to hold and maintain foreign currency earnings in Indian rupees. Moreover the interest earned is not taxable in India.

• NRO ACCOUNT (Non - Resident Ordinary Rupee Account)

An NRO account is a savings or current account held in India that helps NRIs manage income earned in India such as rent, dividends, or pension from abroad. The account holder can deposit and manage accumulated rupee funds conveniently through an NRO account.

• FCNR Account (Foreign Currency Non Resident Account)

FCNR Deposit is a Fixed Deposit Foreign Currency account and not a savings account. Deposits in this account can be made in any of the major currencies like US Dollar, UK Pound, Canadian Dollar, Deutsche Mark, Japanese Yen and Euro.

Routine duties of a Private Secretary are:

i) Take dictation and transcribe the same on computer. 

ii) Tabulate data, make simple calculations etc. 

iii) Do correspondence with other organizations on the instructions of the executive . 

iv) Take initiative for briefing the information to the executive. 

v) Handl e inward and outward physical mail /e mail. 

vi) Maintain records 

vii) Operat e office machines and ensure their maintenance. 

viii) Maintain appointment diary, memory aids, etc. 

ix) Locate information from various sources including internet .

Mail Accounting Software helps to manage postage expenses. The software helps in collecting, maintaining and reporting mail accounting data. It also helps in tracking and better controlling business mail expenses.

Record Management is an important activity in every office as: 

1. The records act as memory unit of an organization and hence provide history of any business. 

2. Records constitute the database for the Managerial Information System. Here , they provide necessary information for future planning and policy formulation of a business. 

3. Important decisions for the smooth functioning of a business originate from records. 

4. Records provide the basis for compliance of legal and statutory requirements. 

5. Status of the business, i .e., financial health, societal status, comparison with competitors, etc. can be ascertained with the help of business records in the form of various statements and reports. 

6. Records help in handling customers and correspondence carefully to maintain the goodwill of an organization.

Secretarial duties before a meeting : 

1. ascertain the date , time and place i.e. when and where the meeting is to be held in consultation with the executive and take steps to make preparations accordingly e.g. booking of the committee/conference room, hotel etc. 

2. draft the notice and agenda and get it approved. 

3. get adequate number of copies of the notice, agenda and reports etc., if any required to be sent along with the notice and send the same to all the members who have a right to attend the meeting. 

4. check in advance all logistics viz. air - conditioning system, blowers etc. in the meeting room and to arrange for public address system, OHP/LCD/Screen and other equipment that may be required and to see that sufficient number of chairs are made available in the meeting room keeping in view the number of invitees. 

5. book in advance necessary orders for refreshment and lunch. 

6. keep ready 

(i) the items of stationery such as writing paper, pen, pencil, 

(ii) spare copies of agenda, 

(iii) minutes of the previous meeting, 

(iv) the papers, reports, statements and other documents likely to be required at the time of the meeting including letters of apology received from the members unable to attend the meeting etc.

A Secretary performs all the secretarial work relating to a meeting. 

The following are the duties which a secretary has to perform before, during and after the meeting:-

BEFORE THE MEETING

A secretary has to :

a) Ascertain the date, time and place of the meeting in consultation with the executive and take steps to book committee/Conference Room hotel etc. and check all logistics in the room 

b) Draft the notice and agenda and get it approved. 

c) Make arrangements of refreshments 

d) Keep ready the items of stationery and important documents which will be required during the meeting

DURING THE MEETING

a) Take attendance 

b) Help the Chairperson in ascertaining the quorum 

c) Read the notice of the meeting, apologies for absence and minutes of the last meeting etc. 

d) See that refreshments are served properly 

e) Take notes of the proceedings of the meeting

AFTER THE MEETING

a) Prepare draft minutes 

b) Follow up of the decisions taken in the meeting

Minimum number of members required to be present in a meeting is called Quorum.

It is the duty of Secretary to assess the quorum before or during the meeting. If the required quorum is not complete before the start of a meeting OR if the quorum falls below the number, it is the duty of secretary to bring this into the notice of a chairman and the meeting can be adjourned.