DSSSB PGT Chemistry Mock Test - 10 - DSSSB TGT/PGT/PRT MCQ

Two positions of a dice are shown below. When number 1 is on the top, what number will be at the bottom?

Given below is an inequality, which of the following condition is TRUE?

If P ≤ Q ≥ R; E ≥ Q; L < Q = D

Directive Principles aim to promote the welfare of which groups?

Primary function of leaf is to

Direction: In the following questions, you have two passages with 5 questions in each passage. Read the passages carefully and choose the best answer to each question out of the four alternatives.
PASSAGE
A dolphin is an aquatic mammal. Dolphins are extremely intelligent and sociable animals and have their own way to communicate with each other using special sounds. Although they are often mistaken for fish, dolphins are actually mammals. They are members of the Cetacea (pronounced set-ay-shia) family, which also contains whales and porpoises. One way of telling the difference between a cetacean and a fish is by looking at their tails. You can tell a cetacean because their tail fins (called flukes) are horizontal and move up and down. Fish have vertical tails which move from side to side. A dolphin’s body is designed to help them move quickly and easily through water. The dolphin’s fluke propels it through the water. On its back is a curved dorsal fin and on each side of the dolphin is a pectoral fin. The bump on a dolphins head is known as the melon. They trap their prey by using their teeth. Dolphins use a type of sonar to detect where objects are around them. This is called echolocation. Echolocation works when a dolphin bounces a high pitched sound off an object and then listens for the echo to come back. It is a very useful way for dolphins to find food and navigate. Dolphins communicate with each other through clicks, squeaks and whistles. They use these special sounds to greet each other and to indicate if they are in distress. Dolphins live in the sea, but they can’t breathe under water! They breathe through a blowhole and have to come up for air every 15 minutes.

Dolphins use echolocation to

Direction: Read the following passages carefully and answer the question that follows.
In presents scenario of increasing demand for cut flowers, protected cultivation in green house is the best alternatives for using land and other resources more efficiently. In protected environment, suitable environmental conditions for optimum plant growth are provided ultimately quality with products. Greenhouse is made up of glass or plastic film, which allows the solar radiations to pass through but traps the thermal radiations emitted by plants inside and, thereby, provide inside, On the basis of material used, building cost and technology used, green house can be of three types: low-cost greenhouse, medium-cost greenhouse and hi-tech greenhouse.

Q. Why the green house is made up of glass or plastic film?

Direction: Read the following passages carefully and answer the question that follows.
For fourteen and a half months I lived in my little cell or room in the Dehradun jail, and I began to feel as if I was almost a part of it. I was familiar with every bit of it, I knew every mark and dent on the whitewashed walls and on the uneven floor and the ceiling with its moth-eaten rafters. In the little yards outside I greeted little tufts of grass and odd bits of stone as old friends. I was not alone in my cell, for several colonies of wasp and hornets lived there, and many lizards founds a home behind the rafters, emerging in the evening in search of prey.

Q. The author of the passage seems to suggest that?

Read the each sentence to find out whether there is any grammatical error in it. The error, if any will be in one part of the sentence. The letter of that part is the answer. If there is no error, the answer is 'D'. (Ignore the errors of punctuation, if any).

Find out the Synonym of the following word:

CONSEQUENCES

A, B and C jointly thought of engaging themselves in a business venture. It was agreed that A would invest Rs. 6500 for 6 months, B, Rs. 8400 for 5 months and C, Rs. 10,000 for 3 months. A wants to be the working member for which, he was to receive 5% of the profits. The profit earned was Rs. 7400. Calculate the share of B in the profit.

In a maternity centre, 5% of all the childbirth cases result in twins. What is the approximate percentage of twins out of total children born?

Which one cannot be the square of a natural number ?

Car A leaves Delhi at a certain time, after 5 hours Car B leaves Delhi in the same direction as of A. Speed of Car A is 20Km/hr and Speed of Car B is 40Km/hr. In how much time Car B will be 20Km ahead of Car A?

'राजलक्ष्मी दौड़ने में तेज है।' वाक्य में कारक है:

निर्देश: निम्नलिखित गद्यांश को पढ़कर निम्न प्रश्न का उत्तर दें:
हमारे बाल्यकाल के संस्कार ही जीवन का ध्येय निर्धारित करते हैं, अतः यदि शैशव में हमारी संतान ऐसे ‘व्यक्तियों की छाया में ज्ञान प्राप्त करेगी, जिनमें चरित्र तथा सिद्धांत की विशेषता नहीं है, जिनमें संस्कारजनित अनेक दोष हैं, तो फिर विद्यार्थियों के चरित्र पर भी उसी की छाप पड़ेगी और भविष्य में उनके ध्येय भी उसी के अनुसार स्वार्थमय तथा अस्थिर होंगे। शिक्षा एक ऐसा कर्तव्य नहीं है जो किसी पुस्तक को प्रथम पृष्ठ से अंतिम पृष्ठ तक पढ़ाने से ही पूर्ण हो जाता हो, वरन् वह ऐसा कर्तव्य है जिसकी परिधि सारे जीवन को घेरे हुए है और पुस्तकें ऐसे साँचे हैं जिनमें ढालकर उसे सुडौल बनाया जा सकता है।
यह वास्तव में आश्चर्य का विषय है कि हम अपने साधारण कार्यों के लिए करने वालों में जो योग्यता देखते हैं, वैसी योग्यता भी शिक्षकों में नहीं ढूँढ़ते। जो हमारी बालिकाओं, भविष्य की माताओं का निर्माण करेंगे उनके प्रति हमारी उदासीनता को अक्षम्य ही कहना चाहिए। देश-विशेष, समाज-विशेष तथा संस्कृति-विशेष के अनुसार किसी के मानसिक विकास के साधन और सुविधाएँ उपस्थित करते हुए उसे विस्तृत संसार का ऐसा ज्ञान करा देना ही शिक्षा है, जिससे वह अपने जीवन में सामंजस्य का अनुभव कर सके और उसे अपने क्षेत्र-विशेष के साथ ही बाहर भी उपयोगी बना सके। यह महत्त्वपूर्ण कार्य ऐसा नहीं है जिसे किसी विशिष्ट संस्कृति से अनभिज्ञ चंचल चित्त और शिथिल चरित्र वाले व्यक्ति सुचारु रूप से संपादित कर सकें।

Q. किसका कर्तव्य जीवन को घेरे रखना है?

दिए गए शब्द के पर्यायवाची शब्द का चयन करें।
न्यून

इनमें से कौन-सा युग्म अघोष वर्ण है?

C₆H₅OH(g) + O₂(g) → CO₂(g) + H₂O(l)

The magnitude of volume change if 30 ml of C₆H₅OH (g) is burnt with an excess amount of oxygen, is

The % by volume of C₄H₁₀ in a gaseous mixture of C₄H₁₀, CH₄ and CO is 40. When 200 ml of the mixture is burnt in excess of O₂. Find volume (in ml) of CO₂ produced.

PCI₅ molecule has

The first ionisation potential of Na is 5.1 eV. The value of electron gain enthalpy of Na⁺ will be:

[AIEEE 2013]

Energy of an electron is given by E = -2.178 × 10^-18 Wavelength of light required to excite an electron in an hydrogen atom from level n = 1 to n = 2 will be (h = 6.62 × 10^-34 Js and c = 3.0 × 10⁸ ms^-1)    

[AIEEE 2013]

Which of the following is the wrong statement ?                                                                       [AIEEE 2013]

Fog is a colloidal solution of

In which of the following systems, the dispersed phase and dispersion medium are both solid?

Which of the following will have the highest coagulating power for As₂S₃ colloids?