Wednesday, September 17, 2014

CBSE Class 9 - SA1 - Science - Sample Question Paper (2014-15)

SUMMATIVE ASSESSMENT - I 2014

SCIENCE - Class - IX

Time Allowed : 3 hours -                                              Maximum Marks : 90

General Instructions:
1. The question paper comprises of two Sections, A and B. You are to attempt both the sections.
2. All questions are compulsory
3. All questions of Section-A and all questions of Section-B are to be attempted separately.
4. Question numbers 1 to 3 in Section-A are one mark questions. These are to be answered in one word or in one sentence
5. Question numbers 4 to 6 in Sections-A are two marks questions. These are to be answered in about 30 words each.
6. Question numbers 7 to 18 in Section-A are three marks quesrons. These are to be answered in about 50 words each
7. Question numbers 19 to 24 in Section-A are five marks questions. These are to be answered in about 70 words each.
8. Question numbers 25 to 33 in Section-B are multiple choice questions based on practical skills. Each question is a one mark question. You are to select one most appropriate response out of the four provided to you.
9. Question numbers 34 to 36 in Section-B are questions based on practical skills are two marks questions.


SECTION-A
Q1.Which micro-organism lacks any kind of membrane ?1
Q2.An ant travels from P to Q .and then moves from Q toR (as shown in the diagram). Show its resultant displacement in the diagram.
1
Q3.Write the value of acceleration produced in a freely falling body.1
Q4.State the principle used to separate two immiscible liquids of a mixture. Draw a neat and labelled diagram of the apparatus used.2
Q5.What is the function of s$xe tube cells and how are they designed to carry out their function ?2
Q6.State reason for the following:
(i) Road accidents occurring due to high speeds are much worse than accidents due to low speeds of vehicles.
(ii) When a motor car makes a sharp turn at a high speed passengers tend to get thrown to one side.

Tuesday, September 16, 2014

CBSE Class 11 - SA1- Computer Science (C++) Sample Question Paper (2014-15)

Class 11

SA1-Computer Science (C++) Sample Question Paper
(2014-15)
(submitted by a student)

 
Computer Science
Total Marks-45
Q.1 (a) What are the major strengths of a computer? (1)
(b) State the basic units of the computer. Name the subunits that make up the CPU. (2)
(c) What is the difference between software and firmware? (1)
(d) What is meant by the term throughput? What is its significance? (2)
Q.2 (a) What is the difference between copying and moving files and folders? (2)
(b) How are devises treated in C++? (1)
(c) What will be the output of following code fragment when the input is
(i) 'C' (ii) 'A' (iii) 'D' (iv) 'F'?
cin>>ch;
  switch(ch) {
  case 'A' : cout <<"Grade A\n";
      break;
  case 'B' : cout<<"Grade B\n";
  case 'C' : cout<<"Grade C\n";
      break;
  case 'D' : cout<<"Grade D\n";
      break;
  default  : cout<<"Grade F\n";
  }
(2)

Sunday, September 14, 2014

CBSE Class 11 - Computer Science - CH9 - Flow of Control (Sumita Arora Textbook Solutions)

Flow Of Control
(Sumita Arora) Textbook Solutions 7th Edn

CBSE Class 11 - Computer Science with C++ - Ch1 - Computer Overview (Sumita Arora) Textbook Solutions
credits:openclipart

SHORT ANSWER QUESTIONS

Q1: What is null statement and a compound statement? What is the alternate name of the compound statement?

Answer: The simplest statement is null statement or empty statement. It is represented as just semicolon (;).
 e.g. ; // null statement

A compound statement is a sequence of statements enclosed by pair of braces ({}). Alternate name of the compound statement is block.


Q2: What is the significance of a null statement?

Answer: A null statement is useful where the language requires a statement but the program's logic does not.
e.g.  a program keeps on reading a value till it encounters a particular value or end-of-file.
  
while (cin >> val && val != required_vale) 

            ; 

Q3: What are the three constructs that govern statement flow?

Answer: sequence, selection and iteration


Q4: What is the significance of a test-condition in a loop?

Answer: The test-condition in a loop decides whether the loop-body will be executed or not based on the truth value. If the test-condition evaluates to true i.e., 1, the loop-body will execute, otherwise the loop is terminated.


Sunday, September 7, 2014

CBSE Class 10 - हिंदी (पर्यायवाची शब्द)

पर्यायवाची शब्द

CBSE Class 10 - हिंदी (पर्यायवाची शब्द)

१. चंद्र-यान में बैठकर वे ____ की सतह पर उतरे |

२. ' गर्मियों के दिन, _____ का तमतमाता रूप ' |

३. आग ताप रहे हो ? आसमान से _____बाण बरस रहे हैं |

४. मधु पीने के कारण भौंरा ____ भी कहलाता है |

५. शकुंतला ने कान में फूल का _____ फूल पहना था |

६. एक _____ ख़राब हो तो नेत्रहीन नहीं कहेंगे |

७. बुद्ध ने कहा - मैं कब तक राह दिखाऊंगा, अपना _____ खुद ढूँढो |

८. ____ सा तन कहें या चाँदनी- सा बदन !

९. ब्रज के वंशी धर को ______ भी कहते हैं |

१०. हिमालय के शिखर देखो, ऐसी ही एक ______ पर बचेंद्री पाल ने कदम रखे थे |

Friday, September 5, 2014

CBSE Class 10 - Science - CH 8. CONTROL AND COORDINATION

CONTROL AND COORDINATION

CBSE Class 10 - Science - CH 8. CONTROL AND COORDINATION

MCQs

Q1: The plant hormone which is essential for cell division is:

(a) Auxin
(b) Cytokinin
(c) Ethylene
(d) Gibberellin


Q2: The gap between two neurons is called _____

(a) Synapse
(b) Axon
(c) Synthesise
(d) Dendron


Q3: A potted plant is kept in a room. It starts to bend towards the direction of light. This type of movement is known as

(a) Photographism
(b) Photoperiodism
(c) Phototropism
(d) Photocynism


Q4: Tropic movements are

(a) in response to light
(b) in response to gravity
(c) non-directional
(d) unidirectional


Tuesday, September 2, 2014

CBSE Class 10 - हिंदी - अनेक शब्दों के लिए एक शब्द

अनेक शब्दों के लिए एक शब्द

CBSE Class 10 - हिंदी - अनेक शब्दों के लिए एक शब्द

१. जानने की इच्छा
२. हाथ से लिखा हुआ 
३. साफ़-साफ़ कहने वाला 
४. पथ से भ्रष्ट 
५. बहुत तेज चलने वाला 
६. अवसर के अनुसार बदल जाने वाला 
७. जिसका विवाह हो चुका है 
८. जो आँखों के सामने न हो 
९. जानने की इच्छा रखने वाला 
१०. जो किसी बात से न टले
११. जिसका कोई आकार नहीं 
१२. जिसकी पत्नी की मृत्यु हो गई हो 
१३. आत्मा पर विश्वास 
१४. स्वास्थ्य की रक्षा 
१५. वन में रहने वाला मनुष्य
१६. रंग के लिए महल