उत्तरों सहित नर्सिंग प्रवेश परीक्षाओं के लिए रसायन विज्ञान वर्कशीट

What is an alloy?

1. AA mixture of a metal with one or more other elements
2. BA compound formed when a metal reacts with oxygen
3. CA nonmetal that conducts electricity
4. DA pure metal in its natural state

What is the normal pH range of human arterial blood?

1. A7.35 to 7.45
2. B7.00 to 7.10
3. C7.85 to 7.95
4. D6.35 to 6.45

How does increasing the concentration of a reactant in solution usually affect the reaction rate?

1. AThe rate increases
2. BThe rate stays the same
3. CThe rate decreases
4. DThe reaction stops

ऑक्सीजन परमाणु में कितने संयोजकता (बाहरी कोश के) इलेक्ट्रॉन होते हैं?

1. A2
2. B8
3. C6
4. D16

When mercury(II) oxide is heated, it reacts as 2HgO → 2Hg + O₂. What type of reaction is this?

1. ACombustion
2. BSynthesis
3. CDecomposition
4. DSingle replacement

अधिक तापमान सामान्यतः पानी में ठोस के घुलने की मात्रा को कैसे प्रभावित करता है?

1. Aठोस गैस में बदल जाता है
2. Bअधिक ठोस घुलता है
3. Cठोसों पर इसका कोई प्रभाव नहीं पड़ता
4. Dकम ठोस घुलता है

Which phrase best describes a 0.001 M solution of hydrochloric acid?

1. AA dilute solution of a strong acid
2. BA concentrated solution of a weak acid
3. CA dilute solution of a weak acid
4. DA concentrated solution of a strong acid

What fraction of a radioactive isotope remains after three half-lives?

1. A1/9
2. B1/6
3. C1/3
4. D1/8