Explore topic-wise InterviewSolutions in Current Affairs.

K ⁺ ,Rb⁺ and Cs⁺ are large cations and superoxide ion is larger than oxide and peroxide ions. Since due to higher lattice energies,a large cation stabilizes a large anion,therefore these metals form Superoxides.

 Because KHCO₃ is highly soluble in water.

Electrode potential is a measure of the tendency of an element to lose electrons in the aq.solution .It depends upon following factors : 

(i) Sublimation enthalpy. 

(II) Ionisation enthalpy 

(iii) Hydration enthalpy 

Since Li has the smallest size,Its enthalpy of hydration is the highest among alkali metals .Although ionization enthalpy of Li is the highest among alkali metals,it is more than compensated by the high High enthalpy of hydration.Thus Li has the most negative E⁰ Value and hence lithium is the strongest reducing agent

Beryllium has less negative value compared to other alkaline earth metals. However, its reducing nature is due to large hydration energy associated with the small size of Be²⁺ ion and relatively large value of the atomization enthalpy of the metal.

The ionization enthalpy of potassium is less than that of sodium and the electrode potential of Potassium (-2.95 V) is more negative than that of sodium (-2.71 V) and hence sodium is less reactive than potassium.

Increases down the group

(i) They are highly reactive in nature 

(ii) Because of large atomic size. 

(iii) LiI is more covalent in character than KI

complete process may be written as : 

2NH₃+ H₂O+CO₂=(NH₄)₂CO₃

(NH₄)₂CO₃+H₂O+CO₂=2NH₄HCO₃

NH₄HCO₃+NaCl=NH₄Cl+NaHCO₃

Sodium hydrogencarbonate crystal separates. These are heated to give sodium carbonate.

2NaHCO₃=Na₂ CO₃+CO₂+H₂O

 Large Atomic and ionic radii, Low ionization enthalpies, metallic character, low melting and boiling Point, form an ionic bond, low density, show flame colouration, photoelectric effect.

Advantages:

• It is a means of communication and easy to understand.
• Easy to convert into a program code.
• Independent of programming language, i.e., A flowchart can be used to write programs using different programming languages.
• Easy to test the program for errors and easy removal of such errors.

Disadvantages:

• It is time consuming process as it makes use of a number of symbols.
• It is difficult to show the complex logic using a flowchart.
• Any changes in the flowchart needs redrawing the flowchart again.

The process of understanding the given problem and what the solution must do is known as problem definition.

It is the process of expressing the solution of a specific problem, in terms of simple operations that can be understood by the computer.

Pseudo code is structured English that consists of short, English phrases used to explain specific tasks within a program’s algorithm.

The two iterative constructs are conditional looping and unconditional looping.

The ability of executing the program statement one after another in sequence is called sequential construct.

The if-else-if construct is also called a multiple-way branch.

File exchanged through Http have an address other than host name. That address is known as www

Correct option is (c) Two

Correct option is (c) Reserve Bank of India

Correct option is (a) Fund sender

Fund sender has to pay charges for the NEFT services to the bank.

The fund sender pays RTGS charge to the bank.

Individuals, firms and corporate units can get the benefit of NEFT service.

National Electronic Fund Transfer is the full form of NEFT.

A card is issued by the bank to an individual / a firm to withdraw the amount or to make payment from the available balance is called Debit card.

Usually element (till calcium) atomic mass is just double of its atomic number like it, the number of oxygen is 8 and its atomic mass is 16. 

But elements like Li,Be,B,F,Na,Al,P,Cl,Ar &,K has atomic mass = Atomic number * 2 +1  

Example AI = atomic number *2 + 1  =  13*2+1   = 27 and this is its atomic mass.  

Thus, you need to remember only these elements like  Li, Be, B etc . and then you can find the atomic mass of these elements easily.

1. Sponges reproduce both asexually and sexually and they also possess the power of regeneration. Their sexual reproduction is similar to higher animals even though their body organization is primitive type. 

2. Asexual reproduction in sponges takes place by regeneration, budding and gemmule formation. 

3. In sponges, during unfavourable period, gemmule is produced. It is an internal bud. 

4. Archaeocytes which are dormant cells are seen in the aggregation in gemmule. These cells are capable of developing into a new organism. 

5. Amoebocytes are other cells which secrete thick resistant layer of secretion which is coated around archaeocytes. 

6. When favourable conditions of water and temperature return back, the gemmules can develop into new individuals by hatching, e.g. Spongilla.

The hormone produced by the testis is testosterone / androgen.

Gonorrhoea is caused by Neisseria gonorrhoeae bacteria.

We use our tongue for talking. Besides, it mixes saliva with the food during chewing and helps in swallowing food. We also taste food with our tongue. It has taste buds that detect different tastes of food.

The disc like structure which helps in the transfer of substances to and from the foetus’s body is called placenta

The taste buds on the tongue tell us the taste of food. When the food tastes good, appetite increases. If taste buds are absent we cannot taste food and it affects our appetite.

(C) Robin Warren

Answer is (C) Cancer

(B) Alexander Flemming

(B) Tuberculosis

Infectious diseases are caused by Microbes

(A) Small intestine

(B) Tuberculosis

(A) Mosquitoes

Answer is (D) Cholera

A red pigment called haemoglobin gives the blood its red colour. This pigment helps in carrying oxygen to various parts of the body by the blood.

The muscle fibres (muscle cells) of a certain part of the heart are specialised to generate electric currents that cause the normal rhythmic heartbeats. An instrument called the Electrocardiograph can record the electrical changes during a heartbeat. This graphic records the electrical changes during a heartbeat. This graphic recording is called ECG (Electrocardiogram). ECG is done to detect the area of malfunctioning of the heart. So that treatment can be given accordingly.

Certain waste and toxic products are formed during the functioning of body cells. The waste products like urea etc. are toxic. When these toxic materials are not removed from the body, they get mixed with blood and can damage the cells of the body. It is necessary to remove such poisonous waste materials from our body.

Blood is needed by all the parts because it contains the digested food and oxygen in it. It supplies the oxygen and digested food to various parts of the body to provide essential energy to them which helps the body to perform various functions.

• It helps to enhance the absorption of water and dissolved minerals by the creation of a suction pull.
• It helps in getting rid of the excess water.
• It helps in the transport of water and minerals to leaves and leaves use the water for photosynthesis.
• It produces a cooling effect on the plant.

Correct option is (i) Xylem