CBSE Class 8 Science - Chemical Effects of Electric Current (Q and A) (#cbseNotes)

Chemical Effects of Electric Current (Q and A)

Q1: Which of the following liquids conduct electricity & which do not conduct electricity?
Lemon juice, Milk, Vinegar, Salt solution, Distilled water, Honey, Seawater, Rainwater.

Answer:
Conducting: Lemon juice, Vinegar, Salt solution, sea water, Rainwater
Non-Conducting: Milk, Distilled water, Honey.


Q2: What is an electric current?

Answer: The rate of the flow of charge is called an electric current.


Q3: Name a device which glows even when a weak electric current passes through it.

Answer: LED (Light Emitting Diode)

CBSE Class 10 - Biology - Study Notes about Plant Growth Hormones (Phytohormones) (#cbseNotes)

Plant Hormones (Phytohormones)

Plant hormones or phytohormones are small, simple chemical molecules, which are present in low concentration in plants and regulate growth, differentiation and development.


Two Categories of Phytohormones:

① Plant growth promoters: Examples are auxins, gibberellins and cytokinins.
② Plant growth inhibitors: Examples are abscisic acid, ethylene.


All about Auxins
⒈ Auxins are weakly acidic growth hormones.

⒉ Darwin (1880) was first to find about Auxins in the tip of canary grass.

⒊ These hormones are found in shoot apex, leaf Primordia and developing seeds.

CBSE Class 12 - Business Studies - Sample Question Paper - (2017-18) (#cbsePapers)

CBSE Class 12 - Business Studies - Sample
Question Paper - (2017-18)

CBSE Class 12 - Informatics Practices - JAVA Concepts (Worksheet) (#cbseNotes)

JAVA Concepts (Worksheet)

Q1: What will be the value of X1 after execution of the following code?

String X1 ="Graduate", X2 = "Post";
X1 = X2.contcat(X1);


Q2: What is the difference between the use of JTextField and JPasswordField in a form?

Q3: Name the method used to extract specified number of characters from a string?

CBSE CLASS 9 - SOCIAL SCIENCE - WORKING OF INSTITUTIONS ( Q and A) (#cbseNotes)

SOCIAL SCIENCE - WORKING OF INSTITUTIONS

Q & A

Q1: What do you mean by the term institution? Why are they required?

Answer: Several arrangements are made in all modern democracies to perform  various tasks. Such arrangements are called institutions. Some of the tasks performed by these institutions are:

1.  To ensure security to the citizens and provide facilities for education and  health to all.

2.  To collect taxes and spend the money thus raised on administration, defence and development programmes.

3.  To formulate and implement several welfare schemes.

4.  To solve the disputes: if they arise on various decisions or on their  implementation.


A democracy works well when the various institutions perform functions assigned to them.

Q2: Which three institutions are responsible to run a democratic government in India? Mention their respective roles.

Answer: The three institutions responsible to run a democratic government in India are:

CBSE Class 10 - Science - Sample Question Paper - (2017-18) (#cbsePapers)

CBSE Class 10 - Science - Sample
Question Paper - (2017-18)

CBSE Class 12 - Informatics Practices - Java Object Oriented Programming-2 - Inheritance (#cbseNotes)

Java - InheritanceClass 12 - Informatics Practices

Q1: What do you mean by the term 'inheritance'?

Answer: In OOPs, Inheritance is the process of creating new class (Derived Class or sub-classes) from an existing class (Base Class or Super class). A Sub-class inherits all the properties (data members) and behaviour (method members) of the parent class (Super-class).

The level of Inheritance may be extended i.e. A Sub-class may have their own sub-classes.

In Real-life most of the things exhibit Inheritance relationship.


Q2: What is the importance of 'inheriatnce'?

Answer: Inheritance is important for the following reasons:
① Modelling of Real-world
② Reusability of codes
③ Transitive nature of Inheritance